221200222010012 has 12 divisors (see below), whose sum is σ = 442400444020080. Its totient is φ = 94800095147136.

The previous prime is 221200222009997. The next prime is 221200222010029. The reversal of 221200222010012 is 210010222002122.

It is a happy number.

221200222010012 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3950003964437 + ... + 3950003964492.

It is an arithmetic number, because the mean of its divisors is an integer number (36866703668340).

Almost surely, 2^{221200222010012} is an apocalyptic number.

It is an amenable number.

221200222010012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221200222010012 is a wasteful number, since it uses less digits than its factorization.

221200222010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7900007928940 (or 7900007928938 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221200222010012 its reverse (210010222002122), we get a palindrome (431210444012134).

The spelling of 221200222010012 in words is "two hundred twenty-one trillion, two hundred billion, two hundred twenty-two million, ten thousand, twelve".