222100221212012 has 96 divisors (see below), whose sum is σ = 501556756216320. Its totient is φ = 84445780193280.

The previous prime is 222100221211987. The next prime is 222100221212033. The reversal of 222100221212012 is 210212122001222.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 444014453 + ... + 444514380.

It is an arithmetic number, because the mean of its divisors is an integer number (5224549543920).

Almost surely, 2^{222100221212012} is an apocalyptic number.

222100221212012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

222100221212012 is an abundant number, since it is smaller than the sum of its proper divisors (279456535004308).

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

222100221212012 is a wasteful number, since it uses less digits than its factorization.

222100221212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888528903 (or 888528901 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222100221212012 its reverse (210212122001222), we get a palindrome (432312343213234).

The spelling of 222100221212012 in words is "two hundred twenty-two trillion, one hundred billion, two hundred twenty-one million, two hundred twelve thousand, twelve".