13210022020 has 24 divisors (see below), whose sum is σ = 29874973464. Its totient is φ = 4877546496.

The previous prime is 13210022017. The next prime is 13210022027. The reversal of 13210022020 is 2022001231.

It can be written as a sum of positive squares in 4 ways, for example, as 46131264 + 13163890756 = 6792^2 + 114734^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (13210022027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25403629 + ... + 25404148.

It is an arithmetic number, because the mean of its divisors is an integer number (1244790561).

Almost surely, 2^13210022020 is an apocalyptic number.

13210022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13210022020 is an abundant number, since it is smaller than the sum of its proper divisors (16664951444).

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

13210022020 is a wasteful number, since it uses less digits than its factorization.

13210022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50807799 (or 50807797 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 13210022020 its reverse (2022001231), we get a palindrome (15232023251).

The spelling of 13210022020 in words is "thirteen billion, two hundred ten million, twenty-two thousand, twenty".