12111021211222 has 16 divisors (see below), whose sum is σ = 18526741882992. Its totient is φ = 5935655957920.

The previous prime is 12111021211189. The next prime is 12111021211229. The reversal of 12111021211222 is 22211212011121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12111021211222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111021211229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53730568 + ... + 53955499.

It is an arithmetic number, because the mean of its divisors is an integer number (1157921367687).

Almost surely, 2^{12111021211222} is an apocalyptic number.

12111021211222 is a deficient number, since it is larger than the sum of its proper divisors (6415720671770).

12111021211222 is a wasteful number, since it uses less digits than its factorization.

12111021211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107687183.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12111021211222 its reverse (22211212011121), we get a palindrome (34322233222343).

The spelling of 12111021211222 in words is "twelve trillion, one hundred eleven billion, twenty-one million, two hundred eleven thousand, two hundred twenty-two".