211100031123212 has 96 divisors (see below), whose sum is σ = 461277561024000. Its totient is φ = 82122593610240.

The previous prime is 211100031123209. The next prime is 211100031123239. The reversal of 211100031123212 is 212321130001112.

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, 924064739 + ... + 924293157.

It is an arithmetic number, because the mean of its divisors is an integer number (4804974594000).

Almost surely, 2^{211100031123212} is an apocalyptic number.

211100031123212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211100031123212 is an abundant number, since it is smaller than the sum of its proper divisors (250177529900788).

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

211100031123212 is a wasteful number, since it uses less digits than its factorization.

211100031123212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232959 (or 232957 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 211100031123212 its reverse (212321130001112), we get a palindrome (423421161124324).

The spelling of 211100031123212 in words is "two hundred eleven trillion, one hundred billion, thirty-one million, one hundred twenty-three thousand, two hundred twelve".