122120210100 has 144 divisors (see below), whose sum is σ = 407516278400. Its totient is φ = 27657054720.

The previous prime is 122120210059. The next prime is 122120210129. The reversal of 122120210100 is 1012021221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

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, 37855 + ... + 495654.

Almost surely, 2^122120210100 is an apocalyptic number.

122120210100 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 122120210100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203758139200).

122120210100 is an abundant number, since it is smaller than the sum of its proper divisors (285396068300).

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

122120210100 is a wasteful number, since it uses less digits than its factorization.

122120210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533642 (or 533635 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 122120210100 its reverse (1012021221), we get a palindrome (123132231321).

The spelling of 122120210100 in words is "one hundred twenty-two billion, one hundred twenty million, two hundred ten thousand, one hundred".