621112122 has 24 divisors (see below), whose sum is σ = 1347078720. Its totient is φ = 206831880.

The previous prime is 621112099. The next prime is 621112127. The reversal of 621112122 is 221211126.

621112122 is a `hidden beast` number, since 621 + 1 + 1 + 21 + 22 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 621112095 and 621112104.

It is not an unprimeable number, because it can be changed into a prime (621112127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2097 + ... + 35307.

It is an arithmetic number, because the mean of its divisors is an integer number (56128280).

Almost surely, 2^621112122 is an apocalyptic number.

621112122 is an abundant number, since it is smaller than the sum of its proper divisors (725966598).

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

621112122 is a wasteful number, since it uses less digits than its factorization.

621112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34258 (or 34255 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 621112122 is about 24922.1211376560. The cubic root of 621112122 is about 853.2114370900.

Adding to 621112122 its reverse (221211126), we get a palindrome (842323248).

The spelling of 621112122 in words is "six hundred twenty-one million, one hundred twelve thousand, one hundred twenty-two".