222311421 has 12 divisors (see below), whose sum is σ = 321459840. Its totient is φ = 148049160.

The previous prime is 222311393. The next prime is 222311459. The reversal of 222311421 is 124113222.

It is a happy number.

It is not a de Polignac number, because 222311421 - 2⁹ = 222310909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222311394 and 222311403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222311461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3981 + ... + 21458.

It is an arithmetic number, because the mean of its divisors is an integer number (26788320).

Almost surely, 2^222311421 is an apocalyptic number.

It is an amenable number.

222311421 is a deficient number, since it is larger than the sum of its proper divisors (99148419).

222311421 is a wasteful number, since it uses less digits than its factorization.

222311421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26416 (or 26413 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 222311421 is about 14910.1113677933. Note that the first 3 decimals coincide. The cubic root of 222311421 is about 605.7878959044.

Adding to 222311421 its reverse (124113222), we get a palindrome (346424643).

The spelling of 222311421 in words is "two hundred twenty-two million, three hundred eleven thousand, four hundred twenty-one".