13220011420 has 48 divisors (see below), whose sum is σ = 34612397568. Its totient is φ = 4120522560.

The previous prime is 13220011391. The next prime is 13220011477. The reversal of 13220011420 is 2411002231.

It is a junction number, because it is equal to n+sod(n) for n = 13220011394 and 13220011403.

It is a congruent number.

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, 4290672 + ... + 4293751.

It is an arithmetic number, because the mean of its divisors is an integer number (721091616).

Almost surely, 2^13220011420 is an apocalyptic number.

13220011420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13220011420 is an abundant number, since it is smaller than the sum of its proper divisors (21392386148).

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

13220011420 is a wasteful number, since it uses less digits than its factorization.

13220011420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8584450 (or 8584448 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 13220011420 its reverse (2411002231), we get a palindrome (15631013651).

The spelling of 13220011420 in words is "thirteen billion, two hundred twenty million, eleven thousand, four hundred twenty".