22121510255 has 64 divisors (see below), whose sum is σ = 30014530560. Its totient is φ = 15540940800.

The previous prime is 22121510237. The next prime is 22121510263. The reversal of 22121510255 is 55201512122.

It is a happy number.

It is not a de Polignac number, because 22121510255 - 2¹⁰ = 22121509231 is a prime.

It is a super-2 number, since 2×22121510255² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 52544945 + ... + 52545365.

It is an arithmetic number, because the mean of its divisors is an integer number (468977040).

Almost surely, 2^22121510255 is an apocalyptic number.

22121510255 is a deficient number, since it is larger than the sum of its proper divisors (7893020305).

22121510255 is a wasteful number, since it uses less digits than its factorization.

22121510255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852.

The product of its (nonzero) digits is 2000, while the sum is 26.

The spelling of 22121510255 in words is "twenty-two billion, one hundred twenty-one million, five hundred ten thousand, two hundred fifty-five".