12011112251 has 2 divisors, whose sum is σ = 12011112252. Its totient is φ = 12011112250.

The previous prime is 12011112209. The next prime is 12011112259. The reversal of 12011112251 is 15221111021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12011112251 - 2¹⁸ = 12010850107 is a prime.

It is a super-2 number, since 2×12011112251² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12011112259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005556125 + 6005556126.

It is an arithmetic number, because the mean of its divisors is an integer number (6005556126).

Almost surely, 2^12011112251 is an apocalyptic number.

12011112251 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011112251 is an equidigital number, since it uses as much as digits as its factorization.

12011112251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 12011112251 its reverse (15221111021), we get a palindrome (27232223272).

The spelling of 12011112251 in words is "twelve billion, eleven million, one hundred twelve thousand, two hundred fifty-one".