100222100020 has 72 divisors (see below), whose sum is σ = 247252559400. Its totient is φ = 34021612800.

The previous prime is 100222099993. The next prime is 100222100063. The reversal of 100222100020 is 20001222001.

It can be written as a sum of positive squares in 4 ways, for example, as 5263212304 + 94958887716 = 72548^2 + 308154^2 .

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

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, 407295 + ... + 605254.

It is an arithmetic number, because the mean of its divisors is an integer number (3434063325).

Almost surely, 2^100222100020 is an apocalyptic number.

100222100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100222100020 is an abundant number, since it is smaller than the sum of its proper divisors (147030459380).

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

100222100020 is a wasteful number, since it uses less digits than its factorization.

100222100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012673 (or 1012664 counting only the distinct ones).

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

Adding to 100222100020 its reverse (20001222001), we get a palindrome (120223322021).

The spelling of 100222100020 in words is "one hundred billion, two hundred twenty-two million, one hundred thousand, twenty".