45202001021 has 2 divisors, whose sum is σ = 45202001022. Its totient is φ = 45202001020.

The previous prime is 45202001017. The next prime is 45202001059. The reversal of 45202001021 is 12010020254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37331649796 + 7870351225 = 193214^2 + 88715^2 .

It is a cyclic number.

It is not a de Polignac number, because 45202001021 - 2² = 45202001017 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45202001081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22601000510 + 22601000511.

It is an arithmetic number, because the mean of its divisors is an integer number (22601000511).

Almost surely, 2^45202001021 is an apocalyptic number.

It is an amenable number.

45202001021 is a deficient number, since it is larger than the sum of its proper divisors (1).

45202001021 is an equidigital number, since it uses as much as digits as its factorization.

45202001021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 45202001021 its reverse (12010020254), we get a palindrome (57212021275).

The spelling of 45202001021 in words is "forty-five billion, two hundred two million, one thousand, twenty-one".