221213012222 has 4 divisors (see below), whose sum is σ = 331819518336. Its totient is φ = 110606506110.

The previous prime is 221213012201. The next prime is 221213012231. The reversal of 221213012222 is 222210312122.

221213012222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 221213012194 and 221213012203.

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 as a sum of consecutive naturals, namely, 55303253054 + ... + 55303253057.

It is an arithmetic number, because the mean of its divisors is an integer number (82954879584).

Almost surely, 2^221213012222 is an apocalyptic number.

221213012222 is a deficient number, since it is larger than the sum of its proper divisors (110606506114).

221213012222 is a wasteful number, since it uses less digits than its factorization.

221213012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110606506113.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 221213012222 its reverse (222210312122), we get a palindrome (443423324344).

The spelling of 221213012222 in words is "two hundred twenty-one billion, two hundred thirteen million, twelve thousand, two hundred twenty-two".