210100022020 has 48 divisors (see below), whose sum is σ = 504274877568. Its totient is φ = 72029318400.

The previous prime is 210100022009. The next prime is 210100022023. The reversal of 210100022020 is 20220001012.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 210100021988 and 210100022006.

It is not an unprimeable number, because it can be changed into a prime (210100022023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2393019 + ... + 2479261.

It is an arithmetic number, because the mean of its divisors is an integer number (10505726616).

Almost surely, 2^210100022020 is an apocalyptic number.

210100022020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210100022020 is an abundant number, since it is smaller than the sum of its proper divisors (294174855548).

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

210100022020 is a wasteful number, since it uses less digits than its factorization.

210100022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103660 (or 103658 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 210100022020 its reverse (20220001012), we get a palindrome (230320023032).

The spelling of 210100022020 in words is "two hundred ten billion, one hundred million, twenty-two thousand, twenty".