220101100000100 has 144 divisors (see below), whose sum is σ = 529622006355456. Its totient is φ = 78718583808000.

The previous prime is 220101100000069. The next prime is 220101100000127. The reversal of 220101100000100 is 1000001101022.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 914653997 + ... + 914894603.

Almost surely, 2^{220101100000100} is an apocalyptic number.

220101100000100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220101100000100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264811003177728).

220101100000100 is an abundant number, since it is smaller than the sum of its proper divisors (309520906355356).

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

220101100000100 is a wasteful number, since it uses less digits than its factorization.

220101100000100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254326 (or 254319 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 220101100000100 its reverse (1000001101022), we get a palindrome (221101101101122).

The spelling of 220101100000100 in words is "two hundred twenty trillion, one hundred one billion, one hundred million, one hundred", and thus it is an aban number.