13111220122 has 32 divisors (see below), whose sum is σ = 26405817984. Its totient is φ = 4715323200.

The previous prime is 13111220033. The next prime is 13111220141. The reversal of 13111220122 is 22102211131.

It is a junction number, because it is equal to n+sod(n) for n = 13111220096 and 13111220105.

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, 3272529 + ... + 3276532.

It is an arithmetic number, because the mean of its divisors is an integer number (825181812).

Almost surely, 2^13111220122 is an apocalyptic number.

13111220122 is an abundant number, since it is smaller than the sum of its proper divisors (13294597862).

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

13111220122 is a wasteful number, since it uses less digits than its factorization.

13111220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6549094.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 13111220122 its reverse (22102211131), we get a palindrome (35213431253).

The spelling of 13111220122 in words is "thirteen billion, one hundred eleven million, two hundred twenty thousand, one hundred twenty-two".