1121212213223 has 16 divisors (see below), whose sum is σ = 1197029664000. Its totient is φ = 1047079978560.

The previous prime is 1121212213201. The next prime is 1121212213229. The reversal of 1121212213223 is 3223122121211.

It is a cyclic number.

It is not a de Polignac number, because 1121212213223 - 2⁶ = 1121212213159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121212213229) 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, 9246515 + ... + 9366987.

It is an arithmetic number, because the mean of its divisors is an integer number (74814354000).

Almost surely, 2^{1121212213223} is an apocalyptic number.

1121212213223 is a deficient number, since it is larger than the sum of its proper divisors (75817450777).

1121212213223 is a wasteful number, since it uses less digits than its factorization.

1121212213223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127462.

The product of its digits is 576, while the sum is 23.

Adding to 1121212213223 its reverse (3223122121211), we get a palindrome (4344334334434).

The spelling of 1121212213223 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, two hundred thirteen thousand, two hundred twenty-three".