1212871372 has 12 divisors (see below), whose sum is σ = 2122926120. Its totient is φ = 606321056.

The previous prime is 1212871349. The next prime is 1212871393. The reversal of 1212871372 is 2731782121.

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, 2122 + ... + 49297.

It is an arithmetic number, because the mean of its divisors is an integer number (176910510).

Almost surely, 2^1212871372 is an apocalyptic number.

It is an amenable number.

1212871372 is a deficient number, since it is larger than the sum of its proper divisors (910054748).

1212871372 is a wasteful number, since it uses less digits than its factorization.

1212871372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57320 (or 57318 counting only the distinct ones).

The product of its digits is 9408, while the sum is 34.

The square root of 1212871372 is about 34826.3028758437. The cubic root of 1212871372 is about 1066.4444745962. Note that the first 4 decimals are identical.

The spelling of 1212871372 in words is "one billion, two hundred twelve million, eight hundred seventy-one thousand, three hundred seventy-two".