1371221572 has 12 divisors (see below), whose sum is σ = 2742443200. Its totient is φ = 587666376.

The previous prime is 1371221549. The next prime is 1371221597. The reversal of 1371221572 is 2751221731.

1371221572 is an admirable number.

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, 24486072 + ... + 24486127.

Almost surely, 2^1371221572 is an apocalyptic number.

It is an amenable number.

1371221572 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1371221572 is a wasteful number, since it uses less digits than its factorization.

1371221572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48972210 (or 48972208 counting only the distinct ones).

The product of its digits is 5880, while the sum is 31.

The square root of 1371221572 is about 37030.0090737229. The cubic root of 1371221572 is about 1110.9705473991.

The spelling of 1371221572 in words is "one billion, three hundred seventy-one million, two hundred twenty-one thousand, five hundred seventy-two".