222231233021 has 4 divisors (see below), whose sum is σ = 253978552032. Its totient is φ = 190483914012.

The previous prime is 222231232969. The next prime is 222231233027. The reversal of 222231233021 is 120332132222.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120332132222 = 2 ⋅60166066111.

It is not a de Polignac number, because 222231233021 - 2⁶ = 222231232957 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 (222231233027) 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, 15873659495 + ... + 15873659508.

It is an arithmetic number, because the mean of its divisors is an integer number (63494638008).

Almost surely, 2^222231233021 is an apocalyptic number.

It is an amenable number.

222231233021 is a deficient number, since it is larger than the sum of its proper divisors (31747319011).

222231233021 is an equidigital number, since it uses as much as digits as its factorization.

222231233021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31747319010.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 222231233021 its reverse (120332132222), we get a palindrome (342563365243).

The spelling of 222231233021 in words is "two hundred twenty-two billion, two hundred thirty-one million, two hundred thirty-three thousand, twenty-one".