200021001073 has 2 divisors, whose sum is σ = 200021001074. Its totient is φ = 200021001072.

The previous prime is 200021001007. The next prime is 200021001113. The reversal of 200021001073 is 370100120002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136347039504 + 63673961569 = 369252^2 + 252337^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200021001073 is a prime.

It is not a weakly prime, because it can be changed into another prime (200021001373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100010500536 + 100010500537.

It is an arithmetic number, because the mean of its divisors is an integer number (100010500537).

Almost surely, 2^200021001073 is an apocalyptic number.

It is an amenable number.

200021001073 is a deficient number, since it is larger than the sum of its proper divisors (1).

200021001073 is an equidigital number, since it uses as much as digits as its factorization.

200021001073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 16.

Adding to 200021001073 its reverse (370100120002), we get a palindrome (570121121075).

The spelling of 200021001073 in words is "two hundred billion, twenty-one million, one thousand, seventy-three".