222111012111102 has 12 divisors (see below), whose sum is σ = 481240526240760. Its totient is φ = 74037004037028.

The previous prime is 222111012111083. The next prime is 222111012111103. The reversal of 222111012111102 is 201111210111222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 12339500672839 = 222111012111102 / (2 + 2 + 2 + 1 + 1 + 1 + 0 + 1 + 2 + 1 + 1 + 1 + 1 + 0 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222111012111103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6169750336402 + ... + 6169750336437.

It is an arithmetic number, because the mean of its divisors is an integer number (40103377186730).

Almost surely, 2^{222111012111102} is an apocalyptic number.

222111012111102 is an abundant number, since it is smaller than the sum of its proper divisors (259129514129658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222111012111102 is a wasteful number, since it uses less digits than its factorization.

222111012111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12339500672847 (or 12339500672844 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 222111012111102 its reverse (201111210111222), we get a palindrome (423222222222324).

The spelling of 222111012111102 in words is "two hundred twenty-two trillion, one hundred eleven billion, twelve million, one hundred eleven thousand, one hundred two".