21112020122211 has 160 divisors (see below), whose sum is σ = 33904171192320. Its totient is φ = 13062480209856.

The previous prime is 21112020122209. The next prime is 21112020122261. The reversal of 21112020122211 is 11222102021112.

21112020122211 is a `hidden beast` number, since 211 + 1 + 20 + 201 + 22 + 211 = 666.

It is not a de Polignac number, because 21112020122211 - 2¹ = 21112020122209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21112020122261) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 3328393506 + ... + 3328399848.

It is an arithmetic number, because the mean of its divisors is an integer number (211901069952).

Almost surely, 2^{21112020122211} is an apocalyptic number.

21112020122211 is a deficient number, since it is larger than the sum of its proper divisors (12792151070109).

21112020122211 is a wasteful number, since it uses less digits than its factorization.

21112020122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6827 (or 6818 counting only the distinct ones).

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

Adding to 21112020122211 its reverse (11222102021112), we get a palindrome (32334122143323).

The spelling of 21112020122211 in words is "twenty-one trillion, one hundred twelve billion, twenty million, one hundred twenty-two thousand, two hundred eleven".