1211213323233 has 24 divisors (see below), whose sum is σ = 1803146716800. Its totient is φ = 783044773344.

The previous prime is 1211213323193. The next prime is 1211213323237. The reversal of 1211213323233 is 3323233121121.

1211213323233 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 2 + 1 + 332 + 323 + 3 = 666.

It is not a de Polignac number, because 1211213323233 - 2²¹ = 1211211226081 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1211213323197 and 1211213323206.

It is not an unprimeable number, because it can be changed into a prime (1211213323237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13088703 + ... + 13180916.

It is an arithmetic number, because the mean of its divisors is an integer number (75131113200).

Almost surely, 2^{1211213323233} is an apocalyptic number.

It is an amenable number.

1211213323233 is a deficient number, since it is larger than the sum of its proper divisors (591933393567).

1211213323233 is a wasteful number, since it uses less digits than its factorization.

1211213323233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26269781 (or 26269778 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

Adding to 1211213323233 its reverse (3323233121121), we get a palindrome (4534446444354).

The spelling of 1211213323233 in words is "one trillion, two hundred eleven billion, two hundred thirteen million, three hundred twenty-three thousand, two hundred thirty-three".