22222111210221 has 12 divisors (see below), whose sum is σ = 32083994884128. Its totient is φ = 13675145359824.

The previous prime is 22222111210177. The next prime is 22222111210267. The reversal of 22222111210221 is 12201211122222.

It is not a de Polignac number, because 22222111210221 - 2⁶ = 22222111210157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222111210021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21915296545 + ... + 21915297558.

It is an arithmetic number, because the mean of its divisors is an integer number (2673666240344).

Almost surely, 2^{22222111210221} is an apocalyptic number.

It is an amenable number.

22222111210221 is a deficient number, since it is larger than the sum of its proper divisors (9861883673907).

22222111210221 is a wasteful number, since it uses less digits than its factorization.

22222111210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43830594132 (or 43830594119 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22222111210221 its reverse (12201211122222), we get a palindrome (34423322332443).

The spelling of 22222111210221 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred eleven million, two hundred ten thousand, two hundred twenty-one".