20100100212020 has 48 divisors (see below), whose sum is σ = 43573438530048. Its totient is φ = 7780396740480.

The previous prime is 20100100212007. The next prime is 20100100212037. The reversal of 20100100212020 is 2021200100102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20100100211992 and 20100100212010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16609967 + ... + 17778953.

It is an arithmetic number, because the mean of its divisors is an integer number (907779969376).

Almost surely, 2^{20100100212020} is an apocalyptic number.

20100100212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100100212020 is an abundant number, since it is smaller than the sum of its proper divisors (23473338318028).

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

20100100212020 is a wasteful number, since it uses less digits than its factorization.

20100100212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196760 (or 1196758 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20100100212020 its reverse (2021200100102), we get a palindrome (22121300312122).

The spelling of 20100100212020 in words is "twenty trillion, one hundred billion, one hundred million, two hundred twelve thousand, twenty".