11570221028 has 12 divisors (see below), whose sum is σ = 20269925760. Its totient is φ = 5778813672.

The previous prime is 11570220983. The next prime is 11570221043. The reversal of 11570221028 is 82012207511.

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, 1570076 + ... + 1577427.

It is an arithmetic number, because the mean of its divisors is an integer number (1689160480).

Almost surely, 2^11570221028 is an apocalyptic number.

It is an amenable number.

11570221028 is a deficient number, since it is larger than the sum of its proper divisors (8699704732).

11570221028 is a wasteful number, since it uses less digits than its factorization.

11570221028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3148426 (or 3148424 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 29.

Adding to 11570221028 its reverse (82012207511), we get a palindrome (93582428539).

The spelling of 11570221028 in words is "eleven billion, five hundred seventy million, two hundred twenty-one thousand, twenty-eight".