220242442100 has 36 divisors (see below), whose sum is σ = 480688715724. Its totient is φ = 87587738880.

The previous prime is 220242442099. The next prime is 220242442153. The reversal of 220242442100 is 1244242022.

It can be written as a sum of positive squares in 6 ways, for example, as 6506358244 + 213736083856 = 80662^2 + 462316^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6348089 + ... + 6382688.

Almost surely, 2^220242442100 is an apocalyptic number.

220242442100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220242442100 is an abundant number, since it is smaller than the sum of its proper divisors (260446273624).

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

220242442100 is a wasteful number, since it uses less digits than its factorization.

220242442100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12730964 (or 12730957 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 220242442100 its reverse (1244242022), we get a palindrome (221486684122).

The spelling of 220242442100 in words is "two hundred twenty billion, two hundred forty-two million, four hundred forty-two thousand, one hundred".