222333021 has 48 divisors (see below), whose sum is σ = 350034048. Its totient is φ = 135475200.

The previous prime is 222332993. The next prime is 222333029. The reversal of 222333021 is 120333222.

It is a happy number.

It is not a de Polignac number, because 222333021 - 2⁵ = 222332989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222332985 and 222333003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222333029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1053606 + ... + 1053816.

It is an arithmetic number, because the mean of its divisors is an integer number (7292376).

Almost surely, 2^222333021 is an apocalyptic number.

It is an amenable number.

222333021 is a deficient number, since it is larger than the sum of its proper divisors (127701027).

222333021 is a wasteful number, since it uses less digits than its factorization.

222333021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 222333021 is about 14910.8356908659. The cubic root of 222333021 is about 605.8075149217.

Adding to 222333021 its reverse (120333222), we get a palindrome (342666243).

The spelling of 222333021 in words is "two hundred twenty-two million, three hundred thirty-three thousand, twenty-one".