12111026257 has 16 divisors (see below), whose sum is σ = 13952590848. Its totient is φ = 10404425680.

The previous prime is 12111026209. The next prime is 12111026273. The reversal of 12111026257 is 75262011121.

It is not a de Polignac number, because 12111026257 - 2¹⁹ = 12110501969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111026957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267373 + ... + 309370.

It is an arithmetic number, because the mean of its divisors is an integer number (872036928).

Almost surely, 2^12111026257 is an apocalyptic number.

It is an amenable number.

12111026257 is a deficient number, since it is larger than the sum of its proper divisors (1841564591).

12111026257 is a wasteful number, since it uses less digits than its factorization.

12111026257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576860.

The product of its (nonzero) digits is 1680, while the sum is 28.

Adding to 12111026257 its reverse (75262011121), we get a palindrome (87373037378).

The spelling of 12111026257 in words is "twelve billion, one hundred eleven million, twenty-six thousand, two hundred fifty-seven".