13000012220 has 24 divisors (see below), whose sum is σ = 29400028224. Its totient is φ = 4800004416.

The previous prime is 13000012177. The next prime is 13000012231. The reversal of 13000012220 is 2221000031.

It is a happy number.

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, 24999764 + ... + 25000283.

It is an arithmetic number, because the mean of its divisors is an integer number (1225001176).

Almost surely, 2^13000012220 is an apocalyptic number.

13000012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13000012220 is an abundant number, since it is smaller than the sum of its proper divisors (16400016004).

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

13000012220 is a wasteful number, since it uses less digits than its factorization.

13000012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50000069 (or 50000067 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 13000012220 its reverse (2221000031), we get a palindrome (15221012251).

The spelling of 13000012220 in words is "thirteen billion, twelve thousand, two hundred twenty".