20200121020002 has 32 divisors (see below), whose sum is σ = 50369132934144. Its totient is φ = 5246784680400.

The previous prime is 20200121019983. The next prime is 20200121020103. The reversal of 20200121020002 is 20002012100202.

It is a self number, because there is not a number n which added to its sum of digits gives 20200121020002.

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, 21861602374 + ... + 21861603297.

It is an arithmetic number, because the mean of its divisors is an integer number (1574035404192).

Almost surely, 2^{20200121020002} is an apocalyptic number.

20200121020002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20200121020002 is an abundant number, since it is smaller than the sum of its proper divisors (30169011914142).

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

20200121020002 is a wasteful number, since it uses less digits than its factorization.

20200121020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43723205694.

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

Adding to 20200121020002 its reverse (20002012100202), we get a palindrome (40202133120204).

The spelling of 20200121020002 in words is "twenty trillion, two hundred billion, one hundred twenty-one million, twenty thousand, two".