20101100222220 has 96 divisors (see below), whose sum is σ = 56671915216896. Its totient is φ = 5323354944000.

The previous prime is 20101100222201. The next prime is 20101100222233. The reversal of 20101100222220 is 2222200110102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20101100222220.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5428207 + ... + 8346713.

It is an arithmetic number, because the mean of its divisors is an integer number (590332450176).

Almost surely, 2^{20101100222220} is an apocalyptic number.

20101100222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20101100222220 is an abundant number, since it is smaller than the sum of its proper divisors (36570814994676).

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

20101100222220 is a wasteful number, since it uses less digits than its factorization.

20101100222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2919311 (or 2919309 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20101100222220 its reverse (2222200110102), we get a palindrome (22323300332322).

The spelling of 20101100222220 in words is "twenty trillion, one hundred one billion, one hundred million, two hundred twenty-two thousand, two hundred twenty".