21210122200112 has 20 divisors (see below), whose sum is σ = 41095063043760. Its totient is φ = 10604944640448.

The previous prime is 21210122200097. The next prime is 21210122200123. The reversal of 21210122200112 is 21100222101212.

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, 5766683 + ... + 8699130.

It is an arithmetic number, because the mean of its divisors is an integer number (2054753152188).

Almost surely, 2^{21210122200112} is an apocalyptic number.

It is an amenable number.

21210122200112 is a deficient number, since it is larger than the sum of its proper divisors (19884940843648).

21210122200112 is a wasteful number, since it uses less digits than its factorization.

21210122200112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14557460 (or 14557454 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21210122200112 its reverse (21100222101212), we get a palindrome (42310344301324).

The spelling of 21210122200112 in words is "twenty-one trillion, two hundred ten billion, one hundred twenty-two million, two hundred thousand, one hundred twelve".