21623125022116 has 12 divisors (see below), whose sum is σ = 37842007629132. Its totient is φ = 10811122842368.

The previous prime is 21623125022063. The next prime is 21623125022123. The reversal of 21623125022116 is 61122052132612.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10525871809600 + 11097253212516 = 3244360^2 + 3331254^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 109806505 + ... + 110003248.

It is an arithmetic number, because the mean of its divisors is an integer number (3153500635761).

Almost surely, 2^{21623125022116} is an apocalyptic number.

It is an amenable number.

21623125022116 is a deficient number, since it is larger than the sum of its proper divisors (16218882607016).

21623125022116 is a wasteful number, since it uses less digits than its factorization.

21623125022116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219834350 (or 219834348 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 21623125022116 its reverse (61122052132612), we get a palindrome (82745177154728).

The spelling of 21623125022116 in words is "twenty-one trillion, six hundred twenty-three billion, one hundred twenty-five million, twenty-two thousand, one hundred sixteen".