221011000212 has 48 divisors (see below), whose sum is σ = 530169800832. Its totient is φ = 71606183040.

The previous prime is 221011000201. The next prime is 221011000237. The reversal of 221011000212 is 212000110122.

221011000212 is digitally balanced in base 2, because in such base 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 (12).

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 15 ways as a sum of consecutive naturals, for example, 183262 + ... + 689642.

It is an arithmetic number, because the mean of its divisors is an integer number (11045204184).

Almost surely, 2^221011000212 is an apocalyptic number.

It is an amenable number.

221011000212 is an abundant number, since it is smaller than the sum of its proper divisors (309158800620).

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

221011000212 is a wasteful number, since it uses less digits than its factorization.

221011000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507408 (or 507406 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221011000212 its reverse (212000110122), we get a palindrome (433011110334).

The spelling of 221011000212 in words is "two hundred twenty-one billion, eleven million, two hundred twelve", and thus it is an aban number.