2113020331212 has 48 divisors (see below), whose sum is σ = 5634863781120. Its totient is φ = 603704784192.

The previous prime is 2113020331211. The next prime is 2113020331249. The reversal of 2113020331212 is 2121330203112.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2113020331211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3249214 + ... + 3844922.

It is an arithmetic number, because the mean of its divisors is an integer number (117392995440).

Almost surely, 2^{2113020331212} is an apocalyptic number.

It is an amenable number.

2113020331212 is an abundant number, since it is smaller than the sum of its proper divisors (3521843449908).

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

2113020331212 is a wasteful number, since it uses less digits than its factorization.

2113020331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637950 (or 637948 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2113020331212 its reverse (2121330203112), we get a palindrome (4234350534324).

The spelling of 2113020331212 in words is "two trillion, one hundred thirteen billion, twenty million, three hundred thirty-one thousand, two hundred twelve".