10202002001 has 2 divisors, whose sum is σ = 10202002002. Its totient is φ = 10202002000.

The previous prime is 10202001973. The next prime is 10202002037. The reversal of 10202002001 is 10020020201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10201000000 + 1002001 = 101000^2 + 1001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10202002001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10202002001.

It is not a weakly prime, because it can be changed into another prime (10202002081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101001000 + 5101001001.

It is an arithmetic number, because the mean of its divisors is an integer number (5101001001).

Almost surely, 2^10202002001 is an apocalyptic number.

It is an amenable number.

10202002001 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202002001 is an equidigital number, since it uses as much as digits as its factorization.

10202002001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 10202002001 its reverse (10020020201), we get a palindrome (20222022202).

It can be divided in two parts, 1020200 and 2001, that added together give a palindrome (1022201).

The spelling of 10202002001 in words is "ten billion, two hundred two million, two thousand, one".