990121301002033 has 2 divisors, whose sum is σ = 990121301002034. Its totient is φ = 990121301002032.

The previous prime is 990121301001979. The next prime is 990121301002037. The reversal of 990121301002033 is 330200103121099.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 662433937035264 + 327687363966769 = 25737792^2 + 18102137^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-990121301002033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 990121301002033.

It is not a weakly prime, because it can be changed into another prime (990121301002037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495060650501016 + 495060650501017.

It is an arithmetic number, because the mean of its divisors is an integer number (495060650501017).

Almost surely, 2^{990121301002033} is an apocalyptic number.

It is an amenable number.

990121301002033 is a deficient number, since it is larger than the sum of its proper divisors (1).

990121301002033 is an equidigital number, since it uses as much as digits as its factorization.

990121301002033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 34.

The spelling of 990121301002033 in words is "nine hundred ninety trillion, one hundred twenty-one billion, three hundred one million, two thousand, thirty-three".