222331021 has 8 divisors (see below), whose sum is σ = 245466144. Its totient is φ = 199683120.

The previous prime is 222331013. The next prime is 222331051. The reversal of 222331021 is 120133222.

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 222331021 - 2³ = 222331013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222330986 and 222331004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222331001) 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, 120846 + ... + 122671.

It is an arithmetic number, because the mean of its divisors is an integer number (30683268).

Almost surely, 2^222331021 is an apocalyptic number.

It is an amenable number.

222331021 is a deficient number, since it is larger than the sum of its proper divisors (23135123).

222331021 is a wasteful number, since it uses less digits than its factorization.

222331021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243611.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 222331021 is about 14910.7686253929. The cubic root of 222331021 is about 605.8056983994.

Adding to 222331021 its reverse (120133222), we get a palindrome (342464243).

The spelling of 222331021 in words is "two hundred twenty-two million, three hundred thirty-one thousand, twenty-one".