222222100221012 has 48 divisors (see below), whose sum is σ = 533136704490432. Its totient is φ = 71990225303040.

The previous prime is 222222100221007. The next prime is 222222100221013. The reversal of 222222100221012 is 210122001222222.

It is a self number, because there is not a number n which added to its sum of digits gives 222222100221012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222100221013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283661178 + ... + 284443505.

It is an arithmetic number, because the mean of its divisors is an integer number (11107014676884).

Almost surely, 2^{222222100221012} is an apocalyptic number.

It is an amenable number.

222222100221012 is an abundant number, since it is smaller than the sum of its proper divisors (310914604269420).

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

222222100221012 is a wasteful number, since it uses less digits than its factorization.

222222100221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568105608 (or 568105606 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 222222100221012 its reverse (210122001222222), we get a palindrome (432344101443234).

The spelling of 222222100221012 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, one hundred million, two hundred twenty-one thousand, twelve".