211220000020122 has 16 divisors (see below), whose sum is σ = 422440157395200. Its totient is φ = 70406640447552.

The previous prime is 211220000020097. The next prime is 211220000020199. The reversal of 211220000020122 is 221020000022112.

It is a super-2 number, since 2×211220000020122² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17925879 + ... + 27272277.

It is an arithmetic number, because the mean of its divisors is an integer number (26402509837200).

Almost surely, 2^{211220000020122} is an apocalyptic number.

211220000020122 is an abundant number, since it is smaller than the sum of its proper divisors (211220157375078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211220000020122 is a wasteful number, since it uses less digits than its factorization.

211220000020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13112917.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 211220000020122 its reverse (221020000022112), we get a palindrome (432240000042234).

The spelling of 211220000020122 in words is "two hundred eleven trillion, two hundred twenty billion, twenty thousand, one hundred twenty-two".