2131215212 has 36 divisors (see below), whose sum is σ = 4341222144. Its totient is φ = 912814560.

The previous prime is 2131215209. The next prime is 2131215239. The reversal of 2131215212 is 2125121312.

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, 535253 + ... + 539219.

It is an arithmetic number, because the mean of its divisors is an integer number (120589504).

Almost surely, 2^2131215212 is an apocalyptic number.

It is an amenable number.

2131215212 is an abundant number, since it is smaller than the sum of its proper divisors (2210006932).

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

2131215212 is a wasteful number, since it uses less digits than its factorization.

2131215212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6726 (or 6717 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 2131215212 is about 46165.0865048469. The cubic root of 2131215212 is about 1286.8929917971.

Adding to 2131215212 its reverse (2125121312), we get a palindrome (4256336524).

The spelling of 2131215212 in words is "two billion, one hundred thirty-one million, two hundred fifteen thousand, two hundred twelve".