210100021102020 has 96 divisors (see below), whose sum is σ = 677156902732800. Its totient is φ = 47677373737344.

The previous prime is 210100021102003. The next prime is 210100021102021. The reversal of 210100021102020 is 20201120001012.

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 = 210100021101987 and 210100021102005.

It is not an unprimeable number, because it can be changed into a prime (210100021102021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1799359410 + ... + 1799476169.

It is an arithmetic number, because the mean of its divisors is an integer number (7053717736800).

Almost surely, 2^{210100021102020} is an apocalyptic number.

210100021102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210100021102020 is an abundant number, since it is smaller than the sum of its proper divisors (467056881630780).

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

210100021102020 is a wasteful number, since it uses less digits than its factorization.

210100021102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3598835737 (or 3598835735 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210100021102020 its reverse (20201120001012), we get a palindrome (230301141103032).

The spelling of 210100021102020 in words is "two hundred ten trillion, one hundred billion, twenty-one million, one hundred two thousand, twenty".