122321021100 has 36 divisors (see below), whose sum is σ = 353915488584. Its totient is φ = 32618938880.

The previous prime is 122321021089. The next prime is 122321021129. The reversal of 122321021100 is 1120123221.

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 122321021100.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 203868069 + ... + 203868668.

It is an arithmetic number, because the mean of its divisors is an integer number (9830985794).

Almost surely, 2^122321021100 is an apocalyptic number.

122321021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122321021100 is an abundant number, since it is smaller than the sum of its proper divisors (231594467484).

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

122321021100 is a wasteful number, since it uses less digits than its factorization.

122321021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407736754 (or 407736747 counting only the distinct ones).

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

Adding to 122321021100 its reverse (1120123221), we get a palindrome (123441144321).

The spelling of 122321021100 in words is "one hundred twenty-two billion, three hundred twenty-one million, twenty-one thousand, one hundred".