222221211210012 has 36 divisors (see below), whose sum is σ = 603171859000200. Its totient is φ = 63491774631264.

The previous prime is 222221211209981. The next prime is 222221211210013. The reversal of 222221211210012 is 210012112122222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222221211210013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188963614387 + ... + 188963615562.

Almost surely, 2^{222221211210012} is an apocalyptic number.

It is an amenable number.

222221211210012 is an abundant number, since it is smaller than the sum of its proper divisors (380950647790188).

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

222221211210012 is a wasteful number, since it uses less digits than its factorization.

222221211210012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377927229970 (or 377927229961 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 222221211210012 its reverse (210012112122222), we get a palindrome (432233323332234).

The spelling of 222221211210012 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, two hundred eleven million, two hundred ten thousand, twelve".