12111021254 has 16 divisors (see below), whose sum is σ = 18206837856. Its totient is φ = 6042091200.

The previous prime is 12111021253. The next prime is 12111021257. The reversal of 12111021254 is 45212011121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111021253) 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, 2077664 + ... + 2083484.

It is an arithmetic number, because the mean of its divisors is an integer number (1137927366).

Almost surely, 2^12111021254 is an apocalyptic number.

12111021254 is a deficient number, since it is larger than the sum of its proper divisors (6095816602).

12111021254 is a wasteful number, since it uses less digits than its factorization.

12111021254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7951.

The product of its (nonzero) digits is 160, while the sum is 20.

Adding to 12111021254 its reverse (45212011121), we get a palindrome (57323032375).

The spelling of 12111021254 in words is "twelve billion, one hundred eleven million, twenty-one thousand, two hundred fifty-four".