20210102020993 has 2 divisors, whose sum is σ = 20210102020994. Its totient is φ = 20210102020992.

The previous prime is 20210102020937. The next prime is 20210102021023. The reversal of 20210102020993 is 39902020101202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14273828037184 + 5936273983809 = 3778072^2 + 2436447^2 .

It is a cyclic number.

It is not a de Polignac number, because 20210102020993 - 2²⁹ = 20209565150081 is a prime.

It is not a weakly prime, because it can be changed into another prime (20210102020193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105051010496 + 10105051010497.

It is an arithmetic number, because the mean of its divisors is an integer number (10105051010497).

Almost surely, 2^{20210102020993} is an apocalyptic number.

It is an amenable number.

20210102020993 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210102020993 is an equidigital number, since it uses as much as digits as its factorization.

20210102020993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 20210102020993 in words is "twenty trillion, two hundred ten billion, one hundred two million, twenty thousand, nine hundred ninety-three".