122201134220 has 96 divisors (see below), whose sum is σ = 286600216896. Its totient is φ = 43393536000.

The previous prime is 122201134219. The next prime is 122201134241. The reversal of 122201134220 is 22431102221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 122201134192 and 122201134201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1584392 + ... + 1659728.

It is an arithmetic number, because the mean of its divisors is an integer number (2985418926).

Almost surely, 2^122201134220 is an apocalyptic number.

122201134220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122201134220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143300108448).

122201134220 is an abundant number, since it is smaller than the sum of its proper divisors (164399082676).

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

122201134220 is a wasteful number, since it uses less digits than its factorization.

122201134220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75531 (or 75529 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 122201134220 its reverse (22431102221), we get a palindrome (144632236441).

The spelling of 122201134220 in words is "one hundred twenty-two billion, two hundred one million, one hundred thirty-four thousand, two hundred twenty".