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10022222121 = 34057823451
BaseRepresentation
bin10010101010101111…
…01111100100101001
3221212110120122010220
421111113233210221
5131011142101441
64334255000253
7503234324322
oct112527574451
927773518126
1010022222121
1142833128aa
121b38509089
13c3949b162
146b10a9449
153d9cec466
hex2555ef929

10022222121 has 8 divisors (see below), whose sum is σ = 13366272864. Its totient is φ = 6679826400.

The previous prime is 10022222117. The next prime is 10022222123. The reversal of 10022222121 is 12122222001.

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

It is not a de Polignac number, because 10022222121 - 22 = 10022222117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10022222121.

It is not an unprimeable number, because it can be changed into a prime (10022222123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399555 + ... + 423896.

It is an arithmetic number, because the mean of its divisors is an integer number (1670784108).

Almost surely, 210022222121 is an apocalyptic number.

It is an amenable number.

10022222121 is a deficient number, since it is larger than the sum of its proper divisors (3344050743).

10022222121 is an equidigital number, since it uses as much as digits as its factorization.

10022222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827511.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 10022222121 its reverse (12122222001), we get a palindrome (22144444122).

The spelling of 10022222121 in words is "ten billion, twenty-two million, two hundred twenty-two thousand, one hundred twenty-one".