202021012002091 has 2 divisors, whose sum is σ = 202021012002092. Its totient is φ = 202021012002090.

The previous prime is 202021012002079. The next prime is 202021012002157. The reversal of 202021012002091 is 190200210120202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202021012002091 is a prime.

It is not a weakly prime, because it can be changed into another prime (202021012002071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010506001045 + 101010506001046.

It is an arithmetic number, because the mean of its divisors is an integer number (101010506001046).

Almost surely, 2^{202021012002091} is an apocalyptic number.

202021012002091 is a deficient number, since it is larger than the sum of its proper divisors (1).

202021012002091 is an equidigital number, since it uses as much as digits as its factorization.

202021012002091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 202021012002091 its reverse (190200210120202), we get a palindrome (392221222122293).

The spelling of 202021012002091 in words is "two hundred two trillion, twenty-one billion, twelve million, two thousand, ninety-one".