12101111222 has 4 divisors (see below), whose sum is σ = 18151666836. Its totient is φ = 6050555610.

The previous prime is 12101111203. The next prime is 12101111261. The reversal of 12101111222 is 22211110121.

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 = 12101111197 and 12101111206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3025277804 + ... + 3025277807.

It is an arithmetic number, because the mean of its divisors is an integer number (4537916709).

Almost surely, 2^12101111222 is an apocalyptic number.

12101111222 is a deficient number, since it is larger than the sum of its proper divisors (6050555614).

12101111222 is an equidigital number, since it uses as much as digits as its factorization.

12101111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6050555613.

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

Adding to 12101111222 its reverse (22211110121), we get a palindrome (34312221343).

The spelling of 12101111222 in words is "twelve billion, one hundred one million, one hundred eleven thousand, two hundred twenty-two".