202002001012261 has 2 divisors, whose sum is σ = 202002001012262. Its totient is φ = 202002001012260.

The previous prime is 202002001012247. The next prime is 202002001012267. The reversal of 202002001012261 is 162210100200202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187741899187236 + 14260101825025 = 13701894^2 + 3776255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202002001012261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202002001012267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101001000506130 + 101001000506131.

It is an arithmetic number, because the mean of its divisors is an integer number (101001000506131).

Almost surely, 2^{202002001012261} is an apocalyptic number.

It is an amenable number.

202002001012261 is a deficient number, since it is larger than the sum of its proper divisors (1).

202002001012261 is an equidigital number, since it uses as much as digits as its factorization.

202002001012261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 202002001012261 its reverse (162210100200202), we get a palindrome (364212101212463).

The spelling of 202002001012261 in words is "two hundred two trillion, two billion, one million, twelve thousand, two hundred sixty-one".