2021102020002 has 64 divisors (see below), whose sum is σ = 4367615043456. Its totient is φ = 619813524480.

The previous prime is 2021102019991. The next prime is 2021102020009. The reversal of 2021102020002 is 2000202011202.

It is a self number, because there is not a number n which added to its sum of digits gives 2021102020002.

It is not an unprimeable number, because it can be changed into a prime (2021102020009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28640602 + ... + 28711082.

It is an arithmetic number, because the mean of its divisors is an integer number (68243985054).

Almost surely, 2^{2021102020002} is an apocalyptic number.

2021102020002 is an abundant number, since it is smaller than the sum of its proper divisors (2346513023454).

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

2021102020002 is a wasteful number, since it uses less digits than its factorization.

2021102020002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71715.

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

Adding to 2021102020002 its reverse (2000202011202), we get a palindrome (4021304031204).

The spelling of 2021102020002 in words is "two trillion, twenty-one billion, one hundred two million, twenty thousand, two".