1213011112233 has 4 divisors (see below), whose sum is σ = 1617348149648. Its totient is φ = 808674074820.

The previous prime is 1213011112231. The next prime is 1213011112253. The reversal of 1213011112233 is 3322111103121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1213011112233 - 2¹ = 1213011112231 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1213011112231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202168518703 + ... + 202168518708.

It is an arithmetic number, because the mean of its divisors is an integer number (404337037412).

Almost surely, 2^{1213011112233} is an apocalyptic number.

It is an amenable number.

1213011112233 is a deficient number, since it is larger than the sum of its proper divisors (404337037415).

1213011112233 is an equidigital number, since it uses as much as digits as its factorization.

1213011112233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404337037414.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1213011112233 its reverse (3322111103121), we get a palindrome (4535122215354).

The spelling of 1213011112233 in words is "one trillion, two hundred thirteen billion, eleven million, one hundred twelve thousand, two hundred thirty-three".