13356122620 has 24 divisors (see below), whose sum is σ = 28385787024. Its totient is φ = 5278081536.

The previous prime is 13356122617. The next prime is 13356122627. The reversal of 13356122620 is 2622165331.

It is a happy number.

It is a super-2 number, since 2×13356122620² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13356122627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4021269 + ... + 4024588.

It is an arithmetic number, because the mean of its divisors is an integer number (1182741126).

Almost surely, 2^13356122620 is an apocalyptic number.

13356122620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13356122620 is an abundant number, since it is smaller than the sum of its proper divisors (15029664404).

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

13356122620 is a wasteful number, since it uses less digits than its factorization.

13356122620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8045949 (or 8045947 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 13356122620 its reverse (2622165331), we get a palindrome (15978287951).

The spelling of 13356122620 in words is "thirteen billion, three hundred fifty-six million, one hundred twenty-two thousand, six hundred twenty".