222213012 has 24 divisors (see below), whose sum is σ = 592568256. Its totient is φ = 63489408.

The previous prime is 222213011. The next prime is 222213023. The reversal of 222213012 is 210312222.

It is a happy number.

It is a super-2 number, since 2×222213012² = 98757245404224288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222212982 and 222213000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222213011) 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, 1322613 + ... + 1322780.

It is an arithmetic number, because the mean of its divisors is an integer number (24690344).

Almost surely, 2^222213012 is an apocalyptic number.

It is an amenable number.

222213012 is an abundant number, since it is smaller than the sum of its proper divisors (370355244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222213012 is a wasteful number, since it uses less digits than its factorization.

222213012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645407 (or 2645405 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 222213012 is about 14906.8109265530. The cubic root of 222213012 is about 605.6984961195.

Adding to 222213012 its reverse (210312222), we get a palindrome (432525234).

The spelling of 222213012 in words is "two hundred twenty-two million, two hundred thirteen thousand, twelve".