100312020220 has 48 divisors (see below), whose sum is σ = 224948908800. Its totient is φ = 37491471360.

The previous prime is 100312020169. The next prime is 100312020223. The reversal of 100312020220 is 22020213001.

It is a self number, because there is not a number n which added to its sum of digits gives 100312020220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100312020223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2771565 + ... + 2807524.

It is an arithmetic number, because the mean of its divisors is an integer number (4686435600).

Almost surely, 2^100312020220 is an apocalyptic number.

100312020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100312020220 is an abundant number, since it is smaller than the sum of its proper divisors (124636888580).

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

100312020220 is a wasteful number, since it uses less digits than its factorization.

100312020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5579158 (or 5579156 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 100312020220 its reverse (22020213001), we get a palindrome (122332233221).

The spelling of 100312020220 in words is "one hundred billion, three hundred twelve million, twenty thousand, two hundred twenty".