13422421020 has 48 divisors (see below), whose sum is σ = 37853182080. Its totient is φ = 3553559616.

The previous prime is 13422421007. The next prime is 13422421027. The reversal of 13422421020 is 2012422431.

It is a super-2 number, since 2×13422421020² (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 (13422421027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 796362 + ... + 813041.

It is an arithmetic number, because the mean of its divisors is an integer number (788607960).

Almost surely, 2^13422421020 is an apocalyptic number.

13422421020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13422421020 is an abundant number, since it is smaller than the sum of its proper divisors (24430761060).

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

13422421020 is a wasteful number, since it uses less digits than its factorization.

13422421020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609554 (or 1609552 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 13422421020 its reverse (2012422431), we get a palindrome (15434843451).

The spelling of 13422421020 in words is "thirteen billion, four hundred twenty-two million, four hundred twenty-one thousand, twenty".