202011011221993 has 2 divisors, whose sum is σ = 202011011221994. Its totient is φ = 202011011221992.

The previous prime is 202011011221969. The next prime is 202011011222171. The reversal of 202011011221993 is 399122110110202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175503886892944 + 26507124329049 = 13247788^2 + 5148507^2 .

It is a cyclic number.

It is not a de Polignac number, because 202011011221993 - 2²⁵ = 202010977667561 is a prime.

It is not a weakly prime, because it can be changed into another prime (202011011231993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101005505610996 + 101005505610997.

It is an arithmetic number, because the mean of its divisors is an integer number (101005505610997).

Almost surely, 2^{202011011221993} is an apocalyptic number.

It is an amenable number.

202011011221993 is a deficient number, since it is larger than the sum of its proper divisors (1).

202011011221993 is an equidigital number, since it uses as much as digits as its factorization.

202011011221993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 34.

The spelling of 202011011221993 in words is "two hundred two trillion, eleven billion, eleven million, two hundred twenty-one thousand, nine hundred ninety-three".