222031223021 has 4 divisors (see below), whose sum is σ = 222610939392. Its totient is φ = 221451506652.

The previous prime is 222031222999. The next prime is 222031223033. The reversal of 222031223021 is 120322130222.

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 a de Polignac number, because none of the positive numbers 2^k-222031223021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222031222984 and 222031223002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222031223081) 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, 289857611 + ... + 289858376.

It is an arithmetic number, because the mean of its divisors is an integer number (55652734848).

Almost surely, 2^222031223021 is an apocalyptic number.

It is an amenable number.

222031223021 is a deficient number, since it is larger than the sum of its proper divisors (579716371).

222031223021 is an equidigital number, since it uses as much as digits as its factorization.

222031223021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579716370.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 222031223021 its reverse (120322130222), we get a palindrome (342353353243).

The spelling of 222031223021 in words is "two hundred twenty-two billion, thirty-one million, two hundred twenty-three thousand, twenty-one".