21200122201012 has 24 divisors (see below), whose sum is σ = 37652046776960. Its totient is φ = 10442981764800.

The previous prime is 21200122200953. The next prime is 21200122201019. The reversal of 21200122201012 is 21010222100212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200122201019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73257114 + ... + 73545937.

Almost surely, 2^{21200122201012} is an apocalyptic number.

It is an amenable number.

21200122201012 is a deficient number, since it is larger than the sum of its proper divisors (16451924575948).

21200122201012 is a wasteful number, since it uses less digits than its factorization.

21200122201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146803591 (or 146803589 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21200122201012 its reverse (21010222100212), we get a palindrome (42210344301224).

The spelling of 21200122201012 in words is "twenty-one trillion, two hundred billion, one hundred twenty-two million, two hundred one thousand, twelve".