100102020220 has 72 divisors (see below), whose sum is σ = 224119904400. Its totient is φ = 37452340224.

The previous prime is 100102020217. The next prime is 100102020253. The reversal of 100102020220 is 22020201001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 100102020197 and 100102020206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2350476 + ... + 2392684.

It is an arithmetic number, because the mean of its divisors is an integer number (3112776450).

Almost surely, 2^100102020220 is an apocalyptic number.

100102020220 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 100102020220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112059952200).

100102020220 is an abundant number, since it is smaller than the sum of its proper divisors (124017884180).

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

100102020220 is a wasteful number, since it uses less digits than its factorization.

100102020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42395 (or 42314 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 100102020220 its reverse (22020201001), we get a palindrome (122122221221).

The spelling of 100102020220 in words is "one hundred billion, one hundred two million, twenty thousand, two hundred twenty".