13111111122032 has 120 divisors (see below), whose sum is σ = 32261780828160. Its totient is φ = 5104226897280.

The previous prime is 13111111121987. The next prime is 13111111122061. The reversal of 13111111122032 is 23022111111131.

It is a junction number, because it is equal to n+sod(n) for n = 13111111121995 and 13111111122013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10435763 + ... + 11624429.

It is an arithmetic number, because the mean of its divisors is an integer number (268848173568).

Almost surely, 2^{13111111122032} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13111111122032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16130890414080).

13111111122032 is an abundant number, since it is smaller than the sum of its proper divisors (19150669706128).

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

13111111122032 is a wasteful number, since it uses less digits than its factorization.

13111111122032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189979 (or 1189966 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 13111111122032 its reverse (23022111111131), we get a palindrome (36133222233163).

The spelling of 13111111122032 in words is "thirteen trillion, one hundred eleven billion, one hundred eleven million, one hundred twenty-two thousand, thirty-two".