211021021021122 has 48 divisors (see below), whose sum is σ = 496259409085440. Its totient is φ = 64418288661216.

The previous prime is 211021021021051. The next prime is 211021021021157. The reversal of 211021021021122 is 221120120120112.

211021021021122 is a `hidden beast` number, since 2 + 1 + 10 + 210 + 210 + 211 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 211021021021095 and 211021021021104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3550360972 + ... + 3550420407.

It is an arithmetic number, because the mean of its divisors is an integer number (10338737689280).

Almost surely, 2^{211021021021122} is an apocalyptic number.

211021021021122 is an abundant number, since it is smaller than the sum of its proper divisors (285238388064318).

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

211021021021122 is a wasteful number, since it uses less digits than its factorization.

211021021021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7100781527 (or 7100781524 counting only the distinct ones).

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

Adding to 211021021021122 its reverse (221120120120112), we get a palindrome (432141141141234).

The spelling of 211021021021122 in words is "two hundred eleven trillion, twenty-one billion, twenty-one million, twenty-one thousand, one hundred twenty-two".