11921112153 has 12 divisors (see below), whose sum is σ = 17639369748. Its totient is φ = 7753568640.

The previous prime is 11921112127. The next prime is 11921112169. The reversal of 11921112153 is 35121112911.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3004464969 + 8916647184 = 54813^2 + 94428^2 .

It is not a de Polignac number, because 11921112153 - 2⁵ = 11921112121 is a prime.

It is a super-2 number, since 2×11921112153² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11921112193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16152900 + ... + 16153637.

It is an arithmetic number, because the mean of its divisors is an integer number (1469947479).

Almost surely, 2^11921112153 is an apocalyptic number.

It is an amenable number.

11921112153 is a deficient number, since it is larger than the sum of its proper divisors (5718257595).

11921112153 is a wasteful number, since it uses less digits than its factorization.

11921112153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32306584 (or 32306581 counting only the distinct ones).

The product of its digits is 540, while the sum is 27.

The spelling of 11921112153 in words is "eleven billion, nine hundred twenty-one million, one hundred twelve thousand, one hundred fifty-three".