322020131220 has 72 divisors (see below), whose sum is σ = 1034252901864. Its totient is φ = 80820738048.

The previous prime is 322020131219. The next prime is 322020131269. The reversal of 322020131220 is 22131020223.

It can be written as a sum of positive squares in 4 ways, for example, as 15471876996 + 306548254224 = 124386^2 + 553668^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 322020131193 and 322020131202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52614609 + ... + 52620728.

It is an arithmetic number, because the mean of its divisors is an integer number (14364623637).

Almost surely, 2^322020131220 is an apocalyptic number.

322020131220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

322020131220 is an abundant number, since it is smaller than the sum of its proper divisors (712232770644).

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

322020131220 is a wasteful number, since it uses less digits than its factorization.

322020131220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105235369 (or 105235364 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 322020131220 its reverse (22131020223), we get a palindrome (344151151443).

The spelling of 322020131220 in words is "three hundred twenty-two billion, twenty million, one hundred thirty-one thousand, two hundred twenty".