222000231421 has 4 divisors (see below), whose sum is σ = 222002567644. Its totient is φ = 221997895200.

The previous prime is 222000231419. The next prime is 222000231457. The reversal of 222000231421 is 124132000222.

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 202509000100 + 19491231321 = 450010^2 + 139611^2 .

It is a cyclic number.

It is not a de Polignac number, because 222000231421 - 2¹ = 222000231419 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 (222000231121) 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, 1019250 + ... + 1217731.

It is an arithmetic number, because the mean of its divisors is an integer number (55500641911).

Almost surely, 2^222000231421 is an apocalyptic number.

It is an amenable number.

222000231421 is a deficient number, since it is larger than the sum of its proper divisors (2336223).

222000231421 is an equidigital number, since it uses as much as digits as its factorization.

222000231421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2336222.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 222000231421 its reverse (124132000222), we get a palindrome (346132231643).

The spelling of 222000231421 in words is "two hundred twenty-two billion, two hundred thirty-one thousand, four hundred twenty-one".