122003321100 has 144 divisors (see below), whose sum is σ = 359279088000. Its totient is φ = 31956088320.

The previous prime is 122003321081. The next prime is 122003321131. The reversal of 122003321100 is 1123300221.

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 122003321100.

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, 30070272 + ... + 30074328.

Almost surely, 2^122003321100 is an apocalyptic number.

122003321100 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 122003321100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179639544000).

122003321100 is an abundant number, since it is smaller than the sum of its proper divisors (237275766900).

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

122003321100 is a wasteful number, since it uses less digits than its factorization.

122003321100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5832 (or 5825 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 122003321100 its reverse (1123300221), we get a palindrome (123126621321).

The spelling of 122003321100 in words is "one hundred twenty-two billion, three million, three hundred twenty-one thousand, one hundred".