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102121121 = 1071576079
BaseRepresentation
bin1100001011000…
…11111010100001
321010011021211202
412011203322201
5202120333441
614044450545
72350005134
oct605437241
9233137752
10102121121
1152710123
122a249a55
13182070cb
14d7c421b
158e7319b
hex6163ea1

102121121 has 8 divisors (see below), whose sum is σ = 103749120. Its totient is φ = 100505808.

The previous prime is 102121109. The next prime is 102121133. The reversal of 102121121 is 121121201.

It is an interprime number because it is at equal distance from previous prime (102121109) and next prime (102121133).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-102121121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102121141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13760 + ... + 19838.

It is an arithmetic number, because the mean of its divisors is an integer number (12968640).

Almost surely, 2102121121 is an apocalyptic number.

It is an amenable number.

102121121 is a deficient number, since it is larger than the sum of its proper divisors (1627999).

102121121 is a wasteful number, since it uses less digits than its factorization.

102121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6343.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 102121121 is about 10105.4995423284. The cubic root of 102121121 is about 467.4177399186.

Adding to 102121121 its reverse (121121201), we get a palindrome (223242322).

The spelling of 102121121 in words is "one hundred two million, one hundred twenty-one thousand, one hundred twenty-one".

Divisors: 1 107 157 6079 16799 650453 954403 102121121