210332002120020 has 144 divisors (see below), whose sum is σ = 696136952766528. Its totient is φ = 50980108385280.

The previous prime is 210332002120001. The next prime is 210332002120103. The reversal of 210332002120020 is 20021200233012.

210332002120020 is a `hidden beast` number, since 2 + 103 + 320 + 0 + 21 + 200 + 20 = 666.

It is a super-2 number, since 2×210332002120020² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 210332002119975 and 210332002120002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 806572 + ... + 20525948.

It is an arithmetic number, because the mean of its divisors is an integer number (4834284394212).

Almost surely, 2^{210332002120020} is an apocalyptic number.

210332002120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210332002120020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348068476383264).

210332002120020 is an abundant number, since it is smaller than the sum of its proper divisors (485804950646508).

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

210332002120020 is a wasteful number, since it uses less digits than its factorization.

210332002120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19724790 (or 19724785 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 210332002120020 its reverse (20021200233012), we get a palindrome (230353202353032).

The spelling of 210332002120020 in words is "two hundred ten trillion, three hundred thirty-two billion, two million, one hundred twenty thousand, twenty".