2100220120020 has 96 divisors (see below), whose sum is σ = 6415885719936. Its totient is φ = 509091264000.

The previous prime is 2100220119967. The next prime is 2100220120111. The reversal of 2100220120020 is 200210220012.

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 = 2100220119978 and 2100220120005.

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, 6373962 + ... + 6695358.

It is an arithmetic number, because the mean of its divisors is an integer number (66832142916).

Almost surely, 2^{2100220120020} is an apocalyptic number.

2100220120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100220120020 is an abundant number, since it is smaller than the sum of its proper divisors (4315665599916).

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

2100220120020 is a wasteful number, since it uses less digits than its factorization.

2100220120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331321 (or 331319 counting only the distinct ones).

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

Adding to 2100220120020 its reverse (200210220012), we get a palindrome (2300430340032).

The spelling of 2100220120020 in words is "two trillion, one hundred billion, two hundred twenty million, one hundred twenty thousand, twenty".