211231232012 has 12 divisors (see below), whose sum is σ = 369661393416. Its totient is φ = 105613691040.

The previous prime is 211231231973. The next prime is 211231232021. The reversal of 211231232012 is 210232132112.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218393 + ... + 685680.

It is an arithmetic number, because the mean of its divisors is an integer number (30805116118).

Almost surely, 2^211231232012 is an apocalyptic number.

It is an amenable number.

211231232012 is a deficient number, since it is larger than the sum of its proper divisors (158430161404).

211231232012 is a wasteful number, since it uses less digits than its factorization.

211231232012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962488 (or 962486 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 211231232012 its reverse (210232132112), we get a palindrome (421463364124).

The spelling of 211231232012 in words is "two hundred eleven billion, two hundred thirty-one million, two hundred thirty-two thousand, twelve".