202221000073 has 2 divisors, whose sum is σ = 202221000074. Its totient is φ = 202221000072.

The previous prime is 202221000067. The next prime is 202221000181. The reversal of 202221000073 is 370000122202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143328873744 + 58892126329 = 378588^2 + 242677^2 .

It is a cyclic number.

It is not a de Polignac number, because 202221000073 - 2³⁷ = 64782046601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202221000073.

It is not a weakly prime, because it can be changed into another prime (202221006073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101110500036 + 101110500037.

It is an arithmetic number, because the mean of its divisors is an integer number (101110500037).

Almost surely, 2^202221000073 is an apocalyptic number.

It is an amenable number.

202221000073 is a deficient number, since it is larger than the sum of its proper divisors (1).

202221000073 is an equidigital number, since it uses as much as digits as its factorization.

202221000073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 19.

Adding to 202221000073 its reverse (370000122202), we get a palindrome (572221122275).

The spelling of 202221000073 in words is "two hundred two billion, two hundred twenty-one million, seventy-three", and thus it is an aban number.