202300021110221 has 4 divisors (see below), whose sum is σ = 202697467124700. Its totient is φ = 201902575095744.

The previous prime is 202300021110191. The next prime is 202300021110233. The reversal of 202300021110221 is 122011120003202.

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 188138805976900 + 14161215133321 = 13716370^2 + 3763139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202300021110221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202300021110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202300021110281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198723006476 + ... + 198723007493.

It is an arithmetic number, because the mean of its divisors is an integer number (50674366781175).

Almost surely, 2^{202300021110221} is an apocalyptic number.

It is an amenable number.

202300021110221 is a deficient number, since it is larger than the sum of its proper divisors (397446014479).

202300021110221 is an equidigital number, since it uses as much as digits as its factorization.

202300021110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397446014478.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 202300021110221 its reverse (122011120003202), we get a palindrome (324311141113423).

The spelling of 202300021110221 in words is "two hundred two trillion, three hundred billion, twenty-one million, one hundred ten thousand, two hundred twenty-one".