12111256570 has 64 divisors (see below), whose sum is σ = 25500303360. Its totient is φ = 4055199552.

The previous prime is 12111256567. The next prime is 12111256601. The reversal of 12111256570 is 7565211121.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1598451 + ... + 1606009.

It is an arithmetic number, because the mean of its divisors is an integer number (398442240).

Almost surely, 2^12111256570 is an apocalyptic number.

12111256570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12111256570 is an abundant number, since it is smaller than the sum of its proper divisors (13389046790).

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

12111256570 is a wasteful number, since it uses less digits than its factorization.

12111256570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8107.

The product of its (nonzero) digits is 4200, while the sum is 31.

Adding to 12111256570 its reverse (7565211121), we get a palindrome (19676467691).

The spelling of 12111256570 in words is "twelve billion, one hundred eleven million, two hundred fifty-six thousand, five hundred seventy".