220121310100 has 36 divisors (see below), whose sum is σ = 477683988768. Its totient is φ = 88044700000.

The previous prime is 220121310041. The next prime is 220121310119. The reversal of 220121310100 is 1013121022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3836625 + ... + 3893575.

It is an arithmetic number, because the mean of its divisors is an integer number (13268999688).

Almost surely, 2^220121310100 is an apocalyptic number.

220121310100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220121310100 is an abundant number, since it is smaller than the sum of its proper divisors (257562678668).

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

220121310100 is a wasteful number, since it uses less digits than its factorization.

220121310100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95616 (or 95609 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 220121310100 its reverse (1013121022), we get a palindrome (221134431122).

The spelling of 220121310100 in words is "two hundred twenty billion, one hundred twenty-one million, three hundred ten thousand, one hundred".