21536200625122 has 8 divisors (see below), whose sum is σ = 32381399509200. Its totient is φ = 10742400788724.

The previous prime is 21536200625117. The next prime is 21536200625153. The reversal of 21536200625122 is 22152600263512.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12849760872 + ... + 12849762547.

It is an arithmetic number, because the mean of its divisors is an integer number (4047674938650).

Almost surely, 2^{21536200625122} is an apocalyptic number.

21536200625122 is a deficient number, since it is larger than the sum of its proper divisors (10845198884078).

21536200625122 is a wasteful number, since it uses less digits than its factorization.

21536200625122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25699523840.

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 21536200625122 its reverse (22152600263512), we get a palindrome (43688800888634).

The spelling of 21536200625122 in words is "twenty-one trillion, five hundred thirty-six billion, two hundred million, six hundred twenty-five thousand, one hundred twenty-two".