212111021122 has 64 divisors (see below), whose sum is σ = 428554715904. Its totient is φ = 76039741440.

The previous prime is 212111021117. The next prime is 212111021159. The reversal of 212111021122 is 221120111212.

It is a junction number, because it is equal to n+sod(n) for n = 212111021096 and 212111021105.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 457378 + ... + 795874.

It is an arithmetic number, because the mean of its divisors is an integer number (6696167436).

Almost surely, 2^212111021122 is an apocalyptic number.

212111021122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212111021122 is an abundant number, since it is smaller than the sum of its proper divisors (216443694782).

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

212111021122 is a wasteful number, since it uses less digits than its factorization.

212111021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338843.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212111021122 its reverse (221120111212), we get a palindrome (433231132334).

The spelling of 212111021122 in words is "two hundred twelve billion, one hundred eleven million, twenty-one thousand, one hundred twenty-two".