2131122212 has 12 divisors (see below), whose sum is σ = 3748788876. Its totient is φ = 1060039680.

The previous prime is 2131122199. The next prime is 2131122223. The reversal of 2131122212 is 2122211312.

It can be written as a sum of positive squares in 2 ways, for example, as 1544804416 + 586317796 = 39304^2 + 24214^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1379489 + ... + 1381032.

It is an arithmetic number, because the mean of its divisors is an integer number (312399073).

Almost surely, 2^2131122212 is an apocalyptic number.

It is an amenable number.

2131122212 is a deficient number, since it is larger than the sum of its proper divisors (1617666664).

2131122212 is a wasteful number, since it uses less digits than its factorization.

2131122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2760718 (or 2760716 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 2131122212 is about 46164.0792391660. The cubic root of 2131122212 is about 1286.8742727757.

Adding to 2131122212 its reverse (2122211312), we get a palindrome (4253333524).

The spelling of 2131122212 in words is "two billion, one hundred thirty-one million, one hundred twenty-two thousand, two hundred twelve".