221001002212 has 12 divisors (see below), whose sum is σ = 392198962176. Its totient is φ = 108944155880.

The previous prime is 221001002203. The next prime is 221001002231. The reversal of 221001002212 is 212200100122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221001002192 and 221001002201.

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, 389085988 + ... + 389086555.

It is an arithmetic number, because the mean of its divisors is an integer number (32683246848).

Almost surely, 2^221001002212 is an apocalyptic number.

It is an amenable number.

221001002212 is a deficient number, since it is larger than the sum of its proper divisors (171197959964).

221001002212 is a wasteful number, since it uses less digits than its factorization.

221001002212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778172618 (or 778172616 counting only the distinct ones).

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

Adding to 221001002212 its reverse (212200100122), we get a palindrome (433201102334).

The spelling of 221001002212 in words is "two hundred twenty-one billion, one million, two thousand, two hundred twelve".