213103311212 has 96 divisors (see below), whose sum is σ = 435084410880. Its totient is φ = 90304441920.

The previous prime is 213103311163. The next prime is 213103311227. The reversal of 213103311212 is 212113301312.

It is a happy number.

213103311212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 102108833 + ... + 102110919.

It is an arithmetic number, because the mean of its divisors is an integer number (4532129280).

Almost surely, 2^213103311212 is an apocalyptic number.

213103311212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

213103311212 is an abundant number, since it is smaller than the sum of its proper divisors (221981099668).

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

213103311212 is a wasteful number, since it uses less digits than its factorization.

213103311212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4011 (or 4009 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 213103311212 its reverse (212113301312), we get a palindrome (425216612524).

The spelling of 213103311212 in words is "two hundred thirteen billion, one hundred three million, three hundred eleven thousand, two hundred twelve".