211312212012 has 36 divisors (see below), whose sum is σ = 582709434216. Its totient is φ = 64034003520.

The previous prime is 211312211993. The next prime is 211312212053. The reversal of 211312212012 is 210212213112.

211312212012 is a `hidden beast` number, since 211 + 31 + 221 + 201 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266807953 + ... + 266808744.

Almost surely, 2^211312212012 is an apocalyptic number.

211312212012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211312212012 is an abundant number, since it is smaller than the sum of its proper divisors (371397222204).

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

211312212012 is a wasteful number, since it uses less digits than its factorization.

211312212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533616718 (or 533616713 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 211312212012 its reverse (210212213112), we get a palindrome (421524425124).

It can be divided in two parts, 211312 and 212012, that added together give a palindrome (423324).

The spelling of 211312212012 in words is "two hundred eleven billion, three hundred twelve million, two hundred twelve thousand, twelve".