21200122133136 has 60 divisors (see below), whose sum is σ = 62453576175120. Its totient is φ = 6694775409600.

The previous prime is 21200122133119. The next prime is 21200122133137. The reversal of 21200122133136 is 63133122100212.

21200122133136 is a `hidden beast` number, since 2 + 1 + 200 + 122 + 1 + 331 + 3 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (21200122133137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3874288590 + ... + 3874294061.

It is an arithmetic number, because the mean of its divisors is an integer number (1040892936252).

Almost surely, 2^{21200122133136} is an apocalyptic number.

It is an amenable number.

21200122133136 is an abundant number, since it is smaller than the sum of its proper divisors (41253454041984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21200122133136 is a wasteful number, since it uses less digits than its factorization.

21200122133136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7748582684 (or 7748582675 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 21200122133136 its reverse (63133122100212), we get a palindrome (84333244233348).

The spelling of 21200122133136 in words is "twenty-one trillion, two hundred billion, one hundred twenty-two million, one hundred thirty-three thousand, one hundred thirty-six".