22121012662555 has 8 divisors (see below), whose sum is σ = 27942331784400. Its totient is φ = 16765399070496.

The previous prime is 22121012662519. The next prime is 22121012662613. The reversal of 22121012662555 is 55526621012122.

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 22121012662555 - 2¹⁵ = 22121012629787 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116426382340 + ... + 116426382529.

It is an arithmetic number, because the mean of its divisors is an integer number (3492791473050).

Almost surely, 2^{22121012662555} is an apocalyptic number.

22121012662555 is a deficient number, since it is larger than the sum of its proper divisors (5821319121845).

22121012662555 is a wasteful number, since it uses less digits than its factorization.

22121012662555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232852764893.

The product of its (nonzero) digits is 144000, while the sum is 40.

Adding to 22121012662555 its reverse (55526621012122), we get a palindrome (77647633674677).

The spelling of 22121012662555 in words is "twenty-two trillion, one hundred twenty-one billion, twelve million, six hundred sixty-two thousand, five hundred fifty-five".