122200021020 has 144 divisors (see below), whose sum is σ = 434206942848. Its totient is φ = 25392205440.

The previous prime is 122200020941. The next prime is 122200021033. The reversal of 122200021020 is 20120002221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 122200020987 and 122200021005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1856962 + ... + 1921641.

It is an arithmetic number, because the mean of its divisors is an integer number (3015325992).

Almost surely, 2^122200021020 is an apocalyptic number.

122200021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122200021020 is an abundant number, since it is smaller than the sum of its proper divisors (312006921828).

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

122200021020 is a wasteful number, since it uses less digits than its factorization.

122200021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3778640 (or 3778631 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 122200021020 its reverse (20120002221), we get a palindrome (142320023241).

The spelling of 122200021020 in words is "one hundred twenty-two billion, two hundred million, twenty-one thousand, twenty".