22121211220011 has 24 divisors (see below), whose sum is σ = 32034832589760. Its totient is φ = 14709644395776.

The previous prime is 22121211220001. The next prime is 22121211220027. The reversal of 22121211220011 is 11002211212122.

22121211220011 is a `hidden beast` number, since 221 + 2 + 1 + 211 + 220 + 0 + 11 = 666.

It is not a de Polignac number, because 22121211220011 - 2⁷ = 22121211219883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22121211220001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83737150 + ... + 84000908.

It is an arithmetic number, because the mean of its divisors is an integer number (1334784691240).

Almost surely, 2^{22121211220011} is an apocalyptic number.

22121211220011 is a deficient number, since it is larger than the sum of its proper divisors (9913621369749).

22121211220011 is a wasteful number, since it uses less digits than its factorization.

22121211220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287635 (or 287632 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22121211220011 its reverse (11002211212122), we get a palindrome (33123422432133).

The spelling of 22121211220011 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred eleven million, two hundred twenty thousand, eleven".