221200001020012 has 12 divisors (see below), whose sum is σ = 442400002040080. Its totient is φ = 94800000437136.

The previous prime is 221200001019983. The next prime is 221200001020067. The reversal of 221200001020012 is 210020100002122.

It is a happy number.

221200001020012 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 221200001019974 and 221200001020001.

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, 3950000018187 + ... + 3950000018242.

Almost surely, 2^{221200001020012} is an apocalyptic number.

It is an amenable number.

221200001020012 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.

221200001020012 is a wasteful number, since it uses less digits than its factorization.

221200001020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7900000036440 (or 7900000036438 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221200001020012 its reverse (210020100002122), we get a palindrome (431220101022134).

The spelling of 221200001020012 in words is "two hundred twenty-one trillion, two hundred billion, one million, twenty thousand, twelve".