222333100442421 has 4 divisors (see below), whose sum is σ = 296444133923232. Its totient is φ = 148222066961612.

The previous prime is 222333100442389. The next prime is 222333100442447. The reversal of 222333100442421 is 124244001333222.

It is a happy number.

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 222333100442421 - 2⁵ = 222333100442389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222333105442421) 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, 37055516740401 + ... + 37055516740406.

It is an arithmetic number, because the mean of its divisors is an integer number (74111033480808).

Almost surely, 2^{222333100442421} is an apocalyptic number.

It is an amenable number.

222333100442421 is a deficient number, since it is larger than the sum of its proper divisors (74111033480811).

222333100442421 is an equidigital number, since it uses as much as digits as its factorization.

222333100442421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74111033480810.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 222333100442421 its reverse (124244001333222), we get a palindrome (346577101775643).

The spelling of 222333100442421 in words is "two hundred twenty-two trillion, three hundred thirty-three billion, one hundred million, four hundred forty-two thousand, four hundred twenty-one".