1223112051 has 12 divisors (see below), whose sum is σ = 2019105712. Its totient is φ = 698921136.

The previous prime is 1223112043. The next prime is 1223112053. The reversal of 1223112051 is 1502113221.

It is not a de Polignac number, because 1223112051 - 2³ = 1223112043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223112053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9707176 + ... + 9707301.

Almost surely, 2^1223112051 is an apocalyptic number.

1223112051 is a deficient number, since it is larger than the sum of its proper divisors (795993661).

1223112051 is a wasteful number, since it uses less digits than its factorization.

1223112051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19414490 (or 19414487 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1223112051 is about 34973.0189002894. The cubic root of 1223112051 is about 1069.4375158154.

Adding to 1223112051 its reverse (1502113221), we get a palindrome (2725225272).

The spelling of 1223112051 in words is "one billion, two hundred twenty-three million, one hundred twelve thousand, fifty-one".