222043421 has 8 divisors (see below), whose sum is σ = 230412288. Its totient is φ = 213750000.

The previous prime is 222043417. The next prime is 222043429. The reversal of 222043421 is 124340222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222043421 - 2² = 222043417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222043393 and 222043402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222043429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12830 + ... + 24671.

It is an arithmetic number, because the mean of its divisors is an integer number (28801536).

Almost surely, 2^222043421 is an apocalyptic number.

It is an amenable number.

222043421 is a deficient number, since it is larger than the sum of its proper divisors (8368867).

222043421 is a wasteful number, since it uses less digits than its factorization.

222043421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37723.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 222043421 is about 14901.1214678627. The cubic root of 222043421 is about 605.5443689966.

Adding to 222043421 its reverse (124340222), we get a palindrome (346383643).

The spelling of 222043421 in words is "two hundred twenty-two million, forty-three thousand, four hundred twenty-one".