221001200212 has 24 divisors (see below), whose sum is σ = 425364016896. Its totient is φ = 99830328288.

The previous prime is 221001200201. The next prime is 221001200221. The reversal of 221001200212 is 212002100122.

It is a happy number.

221001200212 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 221001200192 and 221001200201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45210568 + ... + 45215455.

It is an arithmetic number, because the mean of its divisors is an integer number (17723500704).

Almost surely, 2^221001200212 is an apocalyptic number.

It is an amenable number.

221001200212 is a deficient number, since it is larger than the sum of its proper divisors (204362816684).

221001200212 is a wasteful number, since it uses less digits than its factorization.

221001200212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90426087 (or 90426085 counting only the distinct ones).

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

Adding to 221001200212 its reverse (212002100122), we get a palindrome (433003300334).

The spelling of 221001200212 in words is "two hundred twenty-one billion, one million, two hundred thousand, two hundred twelve".