100122012020220 has 96 divisors (see below), whose sum is σ = 286100586051840. Its totient is φ = 26153929643520.

The previous prime is 100122012020089. The next prime is 100122012020221. The reversal of 100122012020220 is 22020210221001.

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 100122012020220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100122012020221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48968241 + ... + 50971880.

It is an arithmetic number, because the mean of its divisors is an integer number (2980214438040).

Almost surely, 2^{100122012020220} is an apocalyptic number.

100122012020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100122012020220 is an abundant number, since it is smaller than the sum of its proper divisors (185978574031620).

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

100122012020220 is a wasteful number, since it uses less digits than its factorization.

100122012020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99940475 (or 99940473 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 100122012020220 its reverse (22020210221001), we get a palindrome (122142222241221).

The spelling of 100122012020220 in words is "one hundred trillion, one hundred twenty-two billion, twelve million, twenty thousand, two hundred twenty".