211247992992 has 48 divisors (see below), whose sum is σ = 569513179872. Its totient is φ = 68512861440.

The previous prime is 211247992951. The next prime is 211247993009. The reversal of 211247992992 is 299299742112.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×211247992992² (a number of 23 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, 29732934 + ... + 29740037.

It is an arithmetic number, because the mean of its divisors is an integer number (11864857914).

Almost surely, 2^211247992992 is an apocalyptic number.

It is an amenable number.

211247992992 is an abundant number, since it is smaller than the sum of its proper divisors (358265186880).

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

211247992992 is a wasteful number, since it uses less digits than its factorization.

211247992992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59473021 (or 59473013 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 57.

The spelling of 211247992992 in words is "two hundred eleven billion, two hundred forty-seven million, nine hundred ninety-two thousand, nine hundred ninety-two".