122111620 has 24 divisors (see below), whose sum is σ = 257007744. Its totient is φ = 48735456.

The previous prime is 122111603. The next prime is 122111657. The reversal of 122111620 is 26111221.

It is a super-2 number, since 2×122111620² = 29822495478048800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122111594 and 122111603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2667 + ... + 15853.

It is an arithmetic number, because the mean of its divisors is an integer number (10708656).

Almost surely, 2^122111620 is an apocalyptic number.

122111620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122111620 is an abundant number, since it is smaller than the sum of its proper divisors (134896124).

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

122111620 is a wasteful number, since it uses less digits than its factorization.

122111620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13659 (or 13657 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 122111620 is about 11050.4126619778. The cubic root of 122111620 is about 496.1187768353.

Adding to 122111620 its reverse (26111221), we get a palindrome (148222841).

It can be divided in two parts, 12211 and 1620, that added together give a palindrome (13831).

The spelling of 122111620 in words is "one hundred twenty-two million, one hundred eleven thousand, six hundred twenty".