221111210222 has 24 divisors (see below), whose sum is σ = 385849523160. Its totient is φ = 94753836240.

The previous prime is 221111210219. The next prime is 221111210249. The reversal of 221111210222 is 222012111122.

It is a self number, because there is not a number n which added to its sum of digits gives 221111210222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1133804 + ... + 1314432.

It is an arithmetic number, because the mean of its divisors is an integer number (16077063465).

Almost surely, 2^221111210222 is an apocalyptic number.

221111210222 is a deficient number, since it is larger than the sum of its proper divisors (164738312938).

221111210222 is a wasteful number, since it uses less digits than its factorization.

221111210222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193136 (or 193129 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221111210222 its reverse (222012111122), we get a palindrome (443123321344).

The spelling of 221111210222 in words is "two hundred twenty-one billion, one hundred eleven million, two hundred ten thousand, two hundred twenty-two".