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102122120211221 = 1165314217196187
BaseRepresentation
bin10111001110000100101000…
…101100101110101100010101
3111101120210001010212212202202
4113032010220230232230111
5101341132100233224341
61001110130535414245
730340036224255455
oct2716045054565425
9441523033785682
10102122120211221
112a5a28255a5160
12b553b4b524385
1344ca0c7c0ab16
141b30a46435d65
15bc166d95d79b
hex5ce128b2eb15

102122120211221 has 8 divisors (see below), whose sum is σ = 111576555683424. Its totient is φ = 92696119132720.

The previous prime is 102122120211217. The next prime is 102122120211227. The reversal of 102122120211221 is 122112021221201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102122120211221 - 22 = 102122120211217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102122120211193 and 102122120211202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102122120211227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7108590911 + ... + 7108605276.

It is an arithmetic number, because the mean of its divisors is an integer number (13947069460428).

Almost surely, 2102122120211221 is an apocalyptic number.

102122120211221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102122120211221 is a deficient number, since it is larger than the sum of its proper divisors (9454435472203).

102122120211221 is a wasteful number, since it uses less digits than its factorization.

102122120211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14217196851.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 102122120211221 its reverse (122112021221201), we get a palindrome (224234141432422).

The spelling of 102122120211221 in words is "one hundred two trillion, one hundred twenty-two billion, one hundred twenty million, two hundred eleven thousand, two hundred twenty-one".

Divisors: 1 11 653 7183 14217196187 156389158057 9283829110111 102122120211221