11161221531152 has 80 divisors (see below), whose sum is σ = 27511094832000. Its totient is φ = 4348527845760.

The previous prime is 11161221531139. The next prime is 11161221531191. The reversal of 11161221531152 is 25113512216111.

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, 92382827 + ... + 92503562.

It is an arithmetic number, because the mean of its divisors is an integer number (343888685400).

Almost surely, 2^{11161221531152} is an apocalyptic number.

It is an amenable number.

11161221531152 is an abundant number, since it is smaller than the sum of its proper divisors (16349873300848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11161221531152 is a wasteful number, since it uses less digits than its factorization.

11161221531152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184886429 (or 184886409 counting only the distinct ones).

The product of its digits is 3600, while the sum is 32.

Adding to 11161221531152 its reverse (25113512216111), we get a palindrome (36274733747263).

The spelling of 11161221531152 in words is "eleven trillion, one hundred sixty-one billion, two hundred twenty-one million, five hundred thirty-one thousand, one hundred fifty-two".