100020331220 has 12 divisors (see below), whose sum is σ = 210042695604. Its totient is φ = 40008132480.

The previous prime is 100020331199. The next prime is 100020331247. The reversal of 100020331220 is 22133020001.

It is a happy number.

100020331220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 27464444176 + 72555887044 = 165724^2 + 269362^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100020331195 and 100020331204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2500508261 + ... + 2500508300.

It is an arithmetic number, because the mean of its divisors is an integer number (17503557967).

Almost surely, 2^100020331220 is an apocalyptic number.

100020331220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100020331220 is an abundant number, since it is smaller than the sum of its proper divisors (110022364384).

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

100020331220 is a wasteful number, since it uses less digits than its factorization.

100020331220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5001016570 (or 5001016568 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 100020331220 its reverse (22133020001), we get a palindrome (122153351221).

The spelling of 100020331220 in words is "one hundred billion, twenty million, three hundred thirty-one thousand, two hundred twenty".