210201220120020 has 96 divisors (see below), whose sum is σ = 619974598924800. Its totient is φ = 53066252363904.

The previous prime is 210201220119937. The next prime is 210201220120043. The reversal of 210201220120020 is 20021022102012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62979750 + ... + 66233309.

It is an arithmetic number, because the mean of its divisors is an integer number (6458068738800).

Almost surely, 2^{210201220120020} is an apocalyptic number.

210201220120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210201220120020 is an abundant number, since it is smaller than the sum of its proper divisors (409773378804780).

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

210201220120020 is a wasteful number, since it uses less digits than its factorization.

210201220120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129214517 (or 129214515 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 210201220120020 its reverse (20021022102012), we get a palindrome (230222242222032).

The spelling of 210201220120020 in words is "two hundred ten trillion, two hundred one billion, two hundred twenty million, one hundred twenty thousand, twenty".