122031220 has 12 divisors (see below), whose sum is σ = 256265604. Its totient is φ = 48812480.

The previous prime is 122031209. The next prime is 122031229. The reversal of 122031220 is 22130221.

It can be written as a sum of positive squares in 2 ways, for example, as 75272976 + 46758244 = 8676^2 + 6838^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 122031220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122031229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3050761 + ... + 3050800.

It is an arithmetic number, because the mean of its divisors is an integer number (21355467).

Almost surely, 2^122031220 is an apocalyptic number.

122031220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122031220 is an abundant number, since it is smaller than the sum of its proper divisors (134234384).

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

122031220 is a wasteful number, since it uses less digits than its factorization.

122031220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6101570 (or 6101568 counting only the distinct ones).

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

The square root of 122031220 is about 11046.7741897805. The cubic root of 122031220 is about 496.0098690804.

Adding to 122031220 its reverse (22130221), we get a palindrome (144161441).

Subtracting from 122031220 its reverse (22130221), we obtain a palindrome (99900999).

The spelling of 122031220 in words is "one hundred twenty-two million, thirty-one thousand, two hundred twenty".