100021202022220 has 96 divisors (see below), whose sum is σ = 212438557900800. Its totient is φ = 39554897889024.

The previous prime is 100021202022211. The next prime is 100021202022223. The reversal of 100021202022220 is 22220202120001.

It is a junction number, because it is equal to n+sod(n) for n = 100021202022194 and 100021202022203.

It is not an unprimeable number, because it can be changed into a prime (100021202022223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 924330639 + ... + 924438841.

It is an arithmetic number, because the mean of its divisors is an integer number (2212901644800).

Almost surely, 2^{100021202022220} is an apocalyptic number.

100021202022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100021202022220 is an abundant number, since it is smaller than the sum of its proper divisors (112417355878580).

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

100021202022220 is a wasteful number, since it uses less digits than its factorization.

100021202022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109607 (or 109605 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 100021202022220 its reverse (22220202120001), we get a palindrome (122241404142221).

The spelling of 100021202022220 in words is "one hundred trillion, twenty-one billion, two hundred two million, twenty-two thousand, two hundred twenty".