222001212 has 24 divisors (see below), whose sum is σ = 521001936. Its totient is φ = 73571968.

The previous prime is 222001201. The next prime is 222001223. The reversal of 222001212 is 212100222.

It is an interprime number because it is at equal distance from previous prime (222001201) and next prime (222001223).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51393 + ... + 55544.

It is an arithmetic number, because the mean of its divisors is an integer number (21708414).

Almost surely, 2^222001212 is an apocalyptic number.

It is an amenable number.

222001212 is an abundant number, since it is smaller than the sum of its proper divisors (299000724).

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

222001212 is a wasteful number, since it uses less digits than its factorization.

222001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107117 (or 107115 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 222001212 is about 14899.7050977528. The cubic root of 222001212 is about 605.5059965589.

Adding to 222001212 its reverse (212100222), we get a palindrome (434101434).

The spelling of 222001212 in words is "two hundred twenty-two million, one thousand, two hundred twelve".