202121010122089 has 2 divisors, whose sum is σ = 202121010122090. Its totient is φ = 202121010122088.

The previous prime is 202121010121993. The next prime is 202121010122117. The reversal of 202121010122089 is 980221010121202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202052237682064 + 68772440025 = 14214508^2 + 262245^2 .

It is a cyclic number.

It is not a de Polignac number, because 202121010122089 - 2²³ = 202121001733481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202121010122089.

It is not a weakly prime, because it can be changed into another prime (202121010122789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101060505061044 + 101060505061045.

It is an arithmetic number, because the mean of its divisors is an integer number (101060505061045).

Almost surely, 2^{202121010122089} is an apocalyptic number.

It is an amenable number.

202121010122089 is a deficient number, since it is larger than the sum of its proper divisors (1).

202121010122089 is an equidigital number, since it uses as much as digits as its factorization.

202121010122089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 31.

The spelling of 202121010122089 in words is "two hundred two trillion, one hundred twenty-one billion, ten million, one hundred twenty-two thousand, eighty-nine".