221001012222 has 8 divisors (see below), whose sum is σ = 442002024456. Its totient is φ = 73667004072.

The previous prime is 221001012217. The next prime is 221001012227. The reversal of 221001012222 is 222210100122.

221001012222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221001012217) and next prime (221001012227).

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

221001012222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221001012227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18416751013 + ... + 18416751024.

It is an arithmetic number, because the mean of its divisors is an integer number (55250253057).

Almost surely, 2^221001012222 is an apocalyptic number.

221001012222 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.

221001012222 is a wasteful number, since it uses less digits than its factorization.

221001012222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36833502042.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221001012222 its reverse (222210100122), we get a palindrome (443211112344).

The spelling of 221001012222 in words is "two hundred twenty-one billion, one million, twelve thousand, two hundred twenty-two".