222112100111 has 12 divisors (see below), whose sum is σ = 249817420776. Its totient is φ = 197224270320.

The previous prime is 222112100107. The next prime is 222112100137. The reversal of 222112100111 is 111001211222.

It is not a de Polignac number, because 222112100111 - 2² = 222112100107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222112100141) 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, 21339416 + ... + 21349821.

It is an arithmetic number, because the mean of its divisors is an integer number (20818118398).

Almost surely, 2^222112100111 is an apocalyptic number.

222112100111 is a deficient number, since it is larger than the sum of its proper divisors (27705320665).

222112100111 is a wasteful number, since it uses less digits than its factorization.

222112100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42689302 (or 42689291 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 222112100111 its reverse (111001211222), we get a palindrome (333113311333).

Subtracting from 222112100111 its reverse (111001211222), we obtain a square (111110888889 = 333333²).

It can be divided in two parts, 222112 and 100111, that added together give a palindrome (322223).

The spelling of 222112100111 in words is "two hundred twenty-two billion, one hundred twelve million, one hundred thousand, one hundred eleven".