20100102200220 has 96 divisors (see below), whose sum is σ = 64557671786496. Its totient is φ = 4577355878400.

The previous prime is 20100102200179. The next prime is 20100102200237. The reversal of 20100102200220 is 2200220100102.

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 = 20100102200196 and 20100102200205.

It is a congruent number.

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, 88183941 + ... + 88411580.

It is an arithmetic number, because the mean of its divisors is an integer number (672475747776).

Almost surely, 2^{20100102200220} is an apocalyptic number.

20100102200220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100102200220 is an abundant number, since it is smaller than the sum of its proper divisors (44457569586276).

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

20100102200220 is a wasteful number, since it uses less digits than its factorization.

20100102200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176595811 (or 176595809 counting only the distinct ones).

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

Adding to 20100102200220 its reverse (2200220100102), we get a palindrome (22300322300322).

The spelling of 20100102200220 in words is "twenty trillion, one hundred billion, one hundred two million, two hundred thousand, two hundred twenty".