222021004 has 12 divisors (see below), whose sum is σ = 408986200. Its totient is φ = 105167808.

The previous prime is 222020999. The next prime is 222021011. The reversal of 222021004 is 400120222.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1460589 + ... + 1460740.

Almost surely, 2^222021004 is an apocalyptic number.

It is an amenable number.

222021004 is a deficient number, since it is larger than the sum of its proper divisors (186965196).

222021004 is a wasteful number, since it uses less digits than its factorization.

222021004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2921352 (or 2921350 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 222021004 is about 14900.3692571694. The cubic root of 222021004 is about 605.5239901822.

Adding to 222021004 its reverse (400120222), we get a palindrome (622141226).

The spelling of 222021004 in words is "two hundred twenty-two million, twenty-one thousand, four".