2131210212 has 24 divisors (see below), whose sum is σ = 5107225536. Its totient is φ = 691203168.

The previous prime is 2131210187. The next prime is 2131210231. The reversal of 2131210212 is 2120121312.

It is a junction number, because it is equal to n+sod(n) for n = 2131210191 and 2131210200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2399568 + ... + 2400455.

It is an arithmetic number, because the mean of its divisors is an integer number (212801064).

Almost surely, 2^2131210212 is an apocalyptic number.

It is an amenable number.

2131210212 is an abundant number, since it is smaller than the sum of its proper divisors (2976015324).

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

2131210212 is a wasteful number, since it uses less digits than its factorization.

2131210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4800067 (or 4800065 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2131210212 is about 46165.0323513371. The cubic root of 2131210212 is about 1286.8919854119.

Adding to 2131210212 its reverse (2120121312), we get a palindrome (4251331524).

Subtracting from 2131210212 its reverse (2120121312), we obtain a square (11088900 = 3330²).

The spelling of 2131210212 in words is "two billion, one hundred thirty-one million, two hundred ten thousand, two hundred twelve".