222313021 has 8 divisors (see below), whose sum is σ = 256403840. Its totient is φ = 188805168.

The previous prime is 222312949. The next prime is 222313061. The reversal of 222313021 is 120313222.

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 222313021 - 2²⁵ = 188758589 is a prime.

It is a super-2 number, since 2×222313021² = 98846158612292882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222312986 and 222313004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222313061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144921 + ... + 146446.

It is an arithmetic number, because the mean of its divisors is an integer number (32050480).

Almost surely, 2^222313021 is an apocalyptic number.

It is an amenable number.

222313021 is a deficient number, since it is larger than the sum of its proper divisors (34090819).

222313021 is a wasteful number, since it uses less digits than its factorization.

222313021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291483.

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

The square root of 222313021 is about 14910.1650225610. The cubic root of 222313021 is about 605.7893492086.

Adding to 222313021 its reverse (120313222), we get a palindrome (342626243).

It can be divided in two parts, 22231 and 3021, that added together give a palindrome (25252).

The spelling of 222313021 in words is "two hundred twenty-two million, three hundred thirteen thousand, twenty-one".