122111201220 has 48 divisors (see below), whose sum is σ = 341975094720. Its totient is φ = 32556917376.

The previous prime is 122111201209. The next prime is 122111201293. The reversal of 122111201220 is 22102111221.

It is a super-2 number, since 2×122111201220² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 122111201220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139626 + ... + 513534.

It is an arithmetic number, because the mean of its divisors is an integer number (7124481140).

Almost surely, 2^122111201220 is an apocalyptic number.

122111201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122111201220 is an abundant number, since it is smaller than the sum of its proper divisors (219863893500).

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

122111201220 is a wasteful number, since it uses less digits than its factorization.

122111201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379364 (or 379362 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 122111201220 its reverse (22102111221), we get a palindrome (144213312441).

The spelling of 122111201220 in words is "one hundred twenty-two billion, one hundred eleven million, two hundred one thousand, two hundred twenty".