1213233211111 has 8 divisors (see below), whose sum is σ = 1225268732304. Its totient is φ = 1201198147200.

The previous prime is 1213233211097. The next prime is 1213233211121. The reversal of 1213233211111 is 1111123323121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1213233211111 - 2¹¹ = 1213233209063 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 (1213233211121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8202336 + ... + 8348938.

It is an arithmetic number, because the mean of its divisors is an integer number (153158591538).

Almost surely, 2^{1213233211111} is an apocalyptic number.

1213233211111 is a deficient number, since it is larger than the sum of its proper divisors (12035521193).

1213233211111 is a wasteful number, since it uses less digits than its factorization.

1213233211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228641.

The product of its digits is 216, while the sum is 22.

Adding to 1213233211111 its reverse (1111123323121), we get a palindrome (2324356534232).

The spelling of 1213233211111 in words is "one trillion, two hundred thirteen billion, two hundred thirty-three million, two hundred eleven thousand, one hundred eleven".