122200020 has 72 divisors (see below), whose sum is σ = 390193440. Its totient is φ = 30870720.

The previous prime is 122200007. The next prime is 122200021. The reversal of 122200020 is 20002221.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 122199975 and 122200011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122200021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14446 + ... + 21285.

Almost surely, 2^122200020 is an apocalyptic number.

122200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122200020 is an abundant number, since it is smaller than the sum of its proper divisors (267993420).

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

122200020 is a wasteful number, since it uses less digits than its factorization.

122200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35765 (or 35760 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 122200020 is about 11054.4117889646. The cubic root of 122200020 is about 496.2384660209.

Adding to 122200020 its reverse (20002221), we get a palindrome (142202241).

The spelling of 122200020 in words is "one hundred twenty-two million, two hundred thousand, twenty".