222274387823221 has 4 divisors (see below), whose sum is σ = 223502423115244. Its totient is φ = 221046352531200.

The previous prime is 222274387823099. The next prime is 222274387823231. The reversal of 222274387823221 is 122328783472222.

222274387823221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 19310628316996 + 202963759506225 = 4394386^2 + 14246535^2 .

It is a cyclic number.

It is not a de Polignac number, because 222274387823221 - 2¹¹ = 222274387821173 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 (222274387823231) 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, 614017645740 + ... + 614017646101.

It is an arithmetic number, because the mean of its divisors is an integer number (55875605778811).

Almost surely, 2^{222274387823221} is an apocalyptic number.

It is an amenable number.

222274387823221 is a deficient number, since it is larger than the sum of its proper divisors (1228035292023).

222274387823221 is a wasteful number, since it uses less digits than its factorization.

222274387823221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228035292022.

The product of its digits is 14450688, while the sum is 55.

The spelling of 222274387823221 in words is "two hundred twenty-two trillion, two hundred seventy-four billion, three hundred eighty-seven million, eight hundred twenty-three thousand, two hundred twenty-one".