122321201100 has 144 divisors (see below), whose sum is σ = 404757427200. Its totient is φ = 27939640320.

The previous prime is 122321201087. The next prime is 122321201111. The reversal of 122321201100 is 1102123221.

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 122321201100.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3107341 + ... + 3146459.

Almost surely, 2^122321201100 is an apocalyptic number.

122321201100 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 122321201100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202378713600).

122321201100 is an abundant number, since it is smaller than the sum of its proper divisors (282436226100).

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

122321201100 is a wasteful number, since it uses less digits than its factorization.

122321201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40632 (or 40625 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 122321201100 its reverse (1102123221), we get a palindrome (123423324321).

The spelling of 122321201100 in words is "one hundred twenty-two billion, three hundred twenty-one million, two hundred one thousand, one hundred".