13220121112 has 32 divisors (see below), whose sum is σ = 28464379200. Its totient is φ = 5692874400.

The previous prime is 13220121071. The next prime is 13220121137. The reversal of 13220121112 is 21112102231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3951714 + ... + 3955057.

It is an arithmetic number, because the mean of its divisors is an integer number (889511850).

Almost surely, 2^13220121112 is an apocalyptic number.

It is an amenable number.

13220121112 is an abundant number, since it is smaller than the sum of its proper divisors (15244258088).

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

13220121112 is a wasteful number, since it uses less digits than its factorization.

13220121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7906807 (or 7906803 counting only the distinct ones).

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

Adding to 13220121112 its reverse (21112102231), we get a palindrome (34332223343).

The spelling of 13220121112 in words is "thirteen billion, two hundred twenty million, one hundred twenty-one thousand, one hundred twelve".