102203100023221 has 4 divisors (see below), whose sum is σ = 102207962459200. Its totient is φ = 102198237587244.

The previous prime is 102203100023113. The next prime is 102203100023251. The reversal of 102203100023221 is 122320001302201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102203100023221 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 (102203100023251) 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, 2431186461 + ... + 2431228498.

It is an arithmetic number, because the mean of its divisors is an integer number (25551990614800).

Almost surely, 2^{102203100023221} is an apocalyptic number.

It is an amenable number.

102203100023221 is a deficient number, since it is larger than the sum of its proper divisors (4862435979).

102203100023221 is an equidigital number, since it uses as much as digits as its factorization.

102203100023221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4862435978.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 102203100023221 its reverse (122320001302201), we get a palindrome (224523101325422).

The spelling of 102203100023221 in words is "one hundred two trillion, two hundred three billion, one hundred million, twenty-three thousand, two hundred twenty-one".