2021002020253 has 2 divisors, whose sum is σ = 2021002020254. Its totient is φ = 2021002020252.

The previous prime is 2021002020227. The next prime is 2021002020283. The reversal of 2021002020253 is 3520202001202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1026699880644 + 994302139609 = 1013262^2 + 997147^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021002020253 - 2⁹ = 2021002019741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2021002020253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021002020283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010501010126 + 1010501010127.

It is an arithmetic number, because the mean of its divisors is an integer number (1010501010127).

Almost surely, 2^{2021002020253} is an apocalyptic number.

It is an amenable number.

2021002020253 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021002020253 is an equidigital number, since it uses as much as digits as its factorization.

2021002020253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 2021002020253 its reverse (3520202001202), we get a palindrome (5541204021455).

The spelling of 2021002020253 in words is "two trillion, twenty-one billion, two million, twenty thousand, two hundred fifty-three".