211122012122220 has 96 divisors (see below), whose sum is σ = 594711736012800. Its totient is φ = 55959764509440.

The previous prime is 211122012122183. The next prime is 211122012122261. The reversal of 211122012122220 is 22221210221112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2911294 + ... + 20753786.

It is an arithmetic number, because the mean of its divisors is an integer number (6194913916800).

Almost surely, 2^{211122012122220} is an apocalyptic number.

211122012122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211122012122220 is an abundant number, since it is smaller than the sum of its proper divisors (383589723890580).

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

211122012122220 is a wasteful number, since it uses less digits than its factorization.

211122012122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17843695 (or 17843693 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 211122012122220 its reverse (22221210221112), we get a palindrome (233343222343332).

The spelling of 211122012122220 in words is "two hundred eleven trillion, one hundred twenty-two billion, twelve million, one hundred twenty-two thousand, two hundred twenty".