122020010172 has 48 divisors (see below), whose sum is σ = 316418484480. Its totient is φ = 40664296944.

The previous prime is 122020010171. The next prime is 122020010221. The reversal of 122020010172 is 271010020221.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122020010171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371703 + ... + 618225.

It is an arithmetic number, because the mean of its divisors is an integer number (6592051760).

Almost surely, 2^122020010172 is an apocalyptic number.

122020010172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122020010172 is an abundant number, since it is smaller than the sum of its proper divisors (194398474308).

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

122020010172 is a wasteful number, since it uses less digits than its factorization.

122020010172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251119 (or 251111 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

Adding to 122020010172 its reverse (271010020221), we get a palindrome (393030030393).

The spelling of 122020010172 in words is "one hundred twenty-two billion, twenty million, ten thousand, one hundred seventy-two".