1222110121211 has 16 divisors (see below), whose sum is σ = 1420229099520. Its totient is φ = 1029889464480.

The previous prime is 1222110121207. The next prime is 1222110121217. The reversal of 1222110121211 is 1121210112221.

It is a cyclic number.

It is not a de Polignac number, because 1222110121211 - 2² = 1222110121207 is a prime.

It is a super-2 number, since 2×1222110121211² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1222110121211.

It is not an unprimeable number, because it can be changed into a prime (1222110121217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316910 + ... + 1595196.

It is an arithmetic number, because the mean of its divisors is an integer number (88764318720).

Almost surely, 2^{1222110121211} is an apocalyptic number.

1222110121211 is a deficient number, since it is larger than the sum of its proper divisors (198118978309).

1222110121211 is a wasteful number, since it uses less digits than its factorization.

1222110121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280594.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1222110121211 its reverse (1121210112221), we get a palindrome (2343320233432).

The spelling of 1222110121211 in words is "one trillion, two hundred twenty-two billion, one hundred ten million, one hundred twenty-one thousand, two hundred eleven".