20210120020002 has 16 divisors (see below), whose sum is σ = 44094807316512. Its totient is φ = 6124278793920.

The previous prime is 20210120020001. The next prime is 20210120020039. The reversal of 20210120020002 is 20002002101202.

It is a self number, because there is not a number n which added to its sum of digits gives 20210120020002.

It is not an unprimeable number, because it can be changed into a prime (20210120020001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153106969783 + ... + 153106969914.

It is an arithmetic number, because the mean of its divisors is an integer number (2755925457282).

Almost surely, 2^{20210120020002} is an apocalyptic number.

20210120020002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20210120020002 is an abundant number, since it is smaller than the sum of its proper divisors (23884687296510).

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

20210120020002 is a wasteful number, since it uses less digits than its factorization.

20210120020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306213939713.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20210120020002 its reverse (20002002101202), we get a palindrome (40212122121204).

It can be divided in two parts, 202101200 and 20002, that added together give a palindrome (202121202).

The spelling of 20210120020002 in words is "twenty trillion, two hundred ten billion, one hundred twenty million, twenty thousand, two".