100221002220 has 24 divisors (see below), whose sum is σ = 280618806384. Its totient is φ = 26725600576.

The previous prime is 100221002213. The next prime is 100221002227. The reversal of 100221002220 is 22200122001.

It is an interprime number because it is at equal distance from previous prime (100221002213) and next prime (100221002227).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 100221002196 and 100221002205.

It is not an unprimeable number, because it can be changed into a prime (100221002227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 835174959 + ... + 835175078.

It is an arithmetic number, because the mean of its divisors is an integer number (11692450266).

Almost surely, 2^100221002220 is an apocalyptic number.

100221002220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100221002220 is an abundant number, since it is smaller than the sum of its proper divisors (180397804164).

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

100221002220 is a wasteful number, since it uses less digits than its factorization.

100221002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670350049 (or 1670350047 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 100221002220 its reverse (22200122001), we get a palindrome (122421124221).

The spelling of 100221002220 in words is "one hundred billion, two hundred twenty-one million, two thousand, two hundred twenty".