21000112012210 has 32 divisors (see below), whose sum is σ = 37837887592320. Its totient is φ = 8391673035648.

The previous prime is 21000112012189. The next prime is 21000112012213. The reversal of 21000112012210 is 1221021100012.

It is not an unprimeable number, because it can be changed into a prime (21000112012213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58897129 + ... + 59252611.

It is an arithmetic number, because the mean of its divisors is an integer number (1182433987260).

Almost surely, 2^{21000112012210} is an apocalyptic number.

21000112012210 is a deficient number, since it is larger than the sum of its proper divisors (16837775580110).

21000112012210 is a wasteful number, since it uses less digits than its factorization.

21000112012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361362.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21000112012210 its reverse (1221021100012), we get a palindrome (22221133112222).

The spelling of 21000112012210 in words is "twenty-one trillion, one hundred twelve million, twelve thousand, two hundred ten".