1221112102223 has 16 divisors (see below), whose sum is σ = 1335485163936. Its totient is φ = 1109779660800.

The previous prime is 1221112102219. The next prime is 1221112102241. The reversal of 1221112102223 is 3222012111221.

It is a cyclic number.

It is not a de Polignac number, because 1221112102223 - 2² = 1221112102219 is a prime.

It is a super-2 number, since 2×1221112102223² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1221112102195 and 1221112102204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221112102423) 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, 2265353 + ... + 2752098.

It is an arithmetic number, because the mean of its divisors is an integer number (83467822746).

Almost surely, 2^{1221112102223} is an apocalyptic number.

1221112102223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1221112102223 is a deficient number, since it is larger than the sum of its proper divisors (114373061713).

1221112102223 is a wasteful number, since it uses less digits than its factorization.

1221112102223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5017754.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1221112102223 its reverse (3222012111221), we get a palindrome (4443124213444).

The spelling of 1221112102223 in words is "one trillion, two hundred twenty-one billion, one hundred twelve million, one hundred two thousand, two hundred twenty-three".