1121136651 has 24 divisors (see below), whose sum is σ = 1631874816. Its totient is φ = 741701040.

The previous prime is 1121136641. The next prime is 1121136671. The reversal of 1121136651 is 1566311211.

1121136651 is a `hidden beast` number, since 1 + 1 + 2 + 1 + 1 + 3 + 6 + 651 = 666.

It is not a de Polignac number, because 1121136651 - 2²⁵ = 1087582219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121136641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 735376 + ... + 736898.

It is an arithmetic number, because the mean of its divisors is an integer number (67994784).

Almost surely, 2^1121136651 is an apocalyptic number.

1121136651 is a deficient number, since it is larger than the sum of its proper divisors (510738165).

1121136651 is a wasteful number, since it uses less digits than its factorization.

1121136651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2103 (or 2100 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 1121136651 is about 33483.3787273626. The cubic root of 1121136651 is about 1038.8500143070.

Adding to 1121136651 its reverse (1566311211), we get a palindrome (2687447862).

The spelling of 1121136651 in words is "one billion, one hundred twenty-one million, one hundred thirty-six thousand, six hundred fifty-one".