221211000002 has 8 divisors (see below), whose sum is σ = 332118979596. Its totient is φ = 110504673472.

The previous prime is 221210999959. The next prime is 221211000011. The reversal of 221211000002 is 200000112122.

It is a happy number.

221211000002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 220806949801 + 404050201 = 469901^2 + 20101^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 50410523 + ... + 50414910.

Almost surely, 2^221211000002 is an apocalyptic number.

221211000002 is a deficient number, since it is larger than the sum of its proper divisors (110907979594).

221211000002 is a wasteful number, since it uses less digits than its factorization.

221211000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100826532.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 221211000002 its reverse (200000112122), we get a palindrome (421211112124).

The spelling of 221211000002 in words is "two hundred twenty-one billion, two hundred eleven million, two", and thus it is an aban number.