210002001020020 has 48 divisors (see below), whose sum is σ = 496614702721536. Its totient is φ = 73900997424000.

The previous prime is 210002001019999. The next prime is 210002001020059. The reversal of 210002001020020 is 20020100200012.

It is a super-2 number, since 2×210002001020020² (a number of 29 digits) contains 22 as substring.

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 = 210002001019979 and 210002001020006.

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, 15396034311 + ... + 15396047950.

It is an arithmetic number, because the mean of its divisors is an integer number (10346139640032).

Almost surely, 2^{210002001020020} is an apocalyptic number.

210002001020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210002001020020 is an abundant number, since it is smaller than the sum of its proper divisors (286612701701516).

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

210002001020020 is a wasteful number, since it uses less digits than its factorization.

210002001020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30792082312 (or 30792082310 counting only the distinct ones).

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

Adding to 210002001020020 its reverse (20020100200012), we get a palindrome (230022101220032).

The spelling of 210002001020020 in words is "two hundred ten trillion, two billion, one million, twenty thousand, twenty".