100102111220 has 12 divisors (see below), whose sum is σ = 210214433604. Its totient is φ = 40040844480.

The previous prime is 100102111201. The next prime is 100102111223. The reversal of 100102111220 is 22111201001.

It can be written as a sum of positive squares in 2 ways, for example, as 33056330596 + 67045780624 = 181814^2 + 258932^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100102111223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2502552761 + ... + 2502552800.

It is an arithmetic number, because the mean of its divisors is an integer number (17517869467).

Almost surely, 2^100102111220 is an apocalyptic number.

100102111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100102111220 is an abundant number, since it is smaller than the sum of its proper divisors (110112322384).

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

100102111220 is a wasteful number, since it uses less digits than its factorization.

100102111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5005105570 (or 5005105568 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100102111220 its reverse (22111201001), we get a palindrome (122213312221).

The spelling of 100102111220 in words is "one hundred billion, one hundred two million, one hundred eleven thousand, two hundred twenty".