202221000109973 has 4 divisors (see below), whose sum is σ = 217776461656908. Its totient is φ = 186665538563040.

The previous prime is 202221000109969. The next prime is 202221000109981. The reversal of 202221000109973 is 379901000122202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60498808497604 + 141722191612369 = 7778098^2 + 11904713^2 .

It is a cyclic number.

It is not a de Polignac number, because 202221000109973 - 2² = 202221000109969 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202221000109963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7777730773448 + ... + 7777730773473.

It is an arithmetic number, because the mean of its divisors is an integer number (54444115414227).

Almost surely, 2^{202221000109973} is an apocalyptic number.

It is an amenable number.

202221000109973 is a deficient number, since it is larger than the sum of its proper divisors (15555461546935).

202221000109973 is a wasteful number, since it uses less digits than its factorization.

202221000109973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15555461546934.

The product of its (nonzero) digits is 27216, while the sum is 38.

The spelling of 202221000109973 in words is "two hundred two trillion, two hundred twenty-one billion, one hundred nine thousand, nine hundred seventy-three".