12111256090 has 16 divisors (see below), whose sum is σ = 22331975400. Its totient is φ = 4726343680.

The previous prime is 12111256061. The next prime is 12111256097. The reversal of 12111256090 is 9065211121.

It can be written as a sum of positive squares in 4 ways, for example, as 4379395329 + 7731860761 = 66177^2 + 87931^2 .

It is not an unprimeable number, because it can be changed into a prime (12111256097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14769415 + ... + 14770234.

Almost surely, 2^12111256090 is an apocalyptic number.

12111256090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12111256090 is a deficient number, since it is larger than the sum of its proper divisors (10220719310).

12111256090 is a wasteful number, since it uses less digits than its factorization.

12111256090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29539697.

The product of its (nonzero) digits is 1080, while the sum is 28.

The spelling of 12111256090 in words is "twelve billion, one hundred eleven million, two hundred fifty-six thousand, ninety".