19221000102221 has 4 divisors (see below), whose sum is σ = 19262158561152. Its totient is φ = 19179841643292.

The previous prime is 19221000102197. The next prime is 19221000102323. The reversal of 19221000102221 is 12220100012291.

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 not a de Polignac number, because 19221000102221 - 2²² = 19220995907917 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 (19221000402221) 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, 20579228765 + ... + 20579229698.

It is an arithmetic number, because the mean of its divisors is an integer number (4815539640288).

Almost surely, 2^{19221000102221} is an apocalyptic number.

It is an amenable number.

19221000102221 is a deficient number, since it is larger than the sum of its proper divisors (41158458931).

19221000102221 is an equidigital number, since it uses as much as digits as its factorization.

19221000102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41158458930.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 19221000102221 in words is "nineteen trillion, two hundred twenty-one billion, one hundred two thousand, two hundred twenty-one".