21122200120211 has 32 divisors (see below), whose sum is σ = 22791484108800. Its totient is φ = 19515384120960.

The previous prime is 21122200120183. The next prime is 21122200120237. The reversal of 21122200120211 is 11202100222112.

It is a cyclic number.

It is not a de Polignac number, because 21122200120211 - 2²² = 21122195925907 is a prime.

It is a super-2 number, since 2×21122200120211² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21122200120211.

It is not an unprimeable number, because it can be changed into a prime (21122200120261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89135561 + ... + 89372213.

It is an arithmetic number, because the mean of its divisors is an integer number (712233878400).

Almost surely, 2^{21122200120211} is an apocalyptic number.

21122200120211 is a deficient number, since it is larger than the sum of its proper divisors (1669283988589).

21122200120211 is a wasteful number, since it uses less digits than its factorization.

21122200120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237459.

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

Adding to 21122200120211 its reverse (11202100222112), we get a palindrome (32324300342323).

The spelling of 21122200120211 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred million, one hundred twenty thousand, two hundred eleven".