1112121145 has 16 divisors (see below), whose sum is σ = 1387607760. Its totient is φ = 854635264.

The previous prime is 1112121107. The next prime is 1112121161. The reversal of 1112121145 is 5411212111.

It can be written as a sum of positive squares in 8 ways, for example, as 13927824 + 1098193321 = 3732^2 + 33139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1112121145 is a prime.

It is a super-2 number, since 2×1112121145² = 2473626882312222050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9099 + ... + 48031.

It is an arithmetic number, because the mean of its divisors is an integer number (86725485).

Almost surely, 2^1112121145 is an apocalyptic number.

It is an amenable number.

1112121145 is a deficient number, since it is larger than the sum of its proper divisors (275486615).

1112121145 is a wasteful number, since it uses less digits than its factorization.

1112121145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39164.

The product of its digits is 80, while the sum is 19.

The square root of 1112121145 is about 33348.4804001622. The cubic root of 1112121145 is about 1036.0579146154.

Adding to 1112121145 its reverse (5411212111), we get a palindrome (6523333256).

The spelling of 1112121145 in words is "one billion, one hundred twelve million, one hundred twenty-one thousand, one hundred forty-five".