210311212012 has 24 divisors (see below), whose sum is σ = 401516256960. Its totient is φ = 95592902160.

The previous prime is 210311211991. The next prime is 210311212019. The reversal of 210311212012 is 210212113012.

It is not an unprimeable number, because it can be changed into a prime (210311212019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1808283 + ... + 1921069.

It is an arithmetic number, because the mean of its divisors is an integer number (16729844040).

Almost surely, 2^210311212012 is an apocalyptic number.

210311212012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

210311212012 is a deficient number, since it is larger than the sum of its proper divisors (191205044948).

210311212012 is a wasteful number, since it uses less digits than its factorization.

210311212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155181 (or 155179 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 210311212012 its reverse (210212113012), we get a palindrome (420523325024).

The spelling of 210311212012 in words is "two hundred ten billion, three hundred eleven million, two hundred twelve thousand, twelve".