1112120251 has 16 divisors (see below), whose sum is σ = 1241049600. Its totient is φ = 987899680.

The previous prime is 1112120239. The next prime is 1112120267. The reversal of 1112120251 is 1520212111.

It is a cyclic number.

It is not a de Polignac number, because 1112120251 - 2²⁵ = 1078565819 is a prime.

It is a super-2 number, since 2×1112120251² = 2473622905368606002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1112120651) 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, 410700 + ... + 413398.

It is an arithmetic number, because the mean of its divisors is an integer number (77565600).

Almost surely, 2^1112120251 is an apocalyptic number.

1112120251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1112120251 is a deficient number, since it is larger than the sum of its proper divisors (128929349).

1112120251 is a wasteful number, since it uses less digits than its factorization.

1112120251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3554.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 1112120251 is about 33348.4669962504. The cubic root of 1112120251 is about 1036.0576369970.

Adding to 1112120251 its reverse (1520212111), we get a palindrome (2632332362).

The spelling of 1112120251 in words is "one billion, one hundred twelve million, one hundred twenty thousand, two hundred fifty-one".