11562122013 has 16 divisors (see below), whose sum is σ = 16623995136. Its totient is φ = 7105734720.

The previous prime is 11562121997. The next prime is 11562122017. The reversal of 11562122013 is 31022126511.

It is a happy number.

It is not a de Polignac number, because 11562122013 - 2⁴ = 11562121997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11562122017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166293 + ... + 225338.

It is an arithmetic number, because the mean of its divisors is an integer number (1038999696).

Almost surely, 2^11562122013 is an apocalyptic number.

11562122013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11562122013 is a deficient number, since it is larger than the sum of its proper divisors (5061873123).

11562122013 is a wasteful number, since it uses less digits than its factorization.

11562122013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392404.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 11562122013 its reverse (31022126511), we get a palindrome (42584248524).

The spelling of 11562122013 in words is "eleven billion, five hundred sixty-two million, one hundred twenty-two thousand, thirteen".