210001120012020 has 96 divisors (see below), whose sum is σ = 593853040529280. Its totient is φ = 55443217369600.

The previous prime is 210001120012003. The next prime is 210001120012037. The reversal of 210001120012020 is 20210021100012.

It is an interprime number because it is at equal distance from previous prime (210001120012003) and next prime (210001120012037).

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 = 210001120011987 and 210001120012005.

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, 128990194 + ... + 130608086.

It is an arithmetic number, because the mean of its divisors is an integer number (6185969172180).

Almost surely, 2^{210001120012020} is an apocalyptic number.

210001120012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210001120012020 is an abundant number, since it is smaller than the sum of its proper divisors (383851920517260).

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

210001120012020 is a wasteful number, since it uses less digits than its factorization.

210001120012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639425 (or 1639423 counting only the distinct ones).

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

Adding to 210001120012020 its reverse (20210021100012), we get a palindrome (230211141112032).

It can be divided in two parts, 210001 and 120012020, that added together give a palindrome (120222021).

The spelling of 210001120012020 in words is "two hundred ten trillion, one billion, one hundred twenty million, twelve thousand, twenty".