1211223201233 has 8 divisors (see below), whose sum is σ = 1235280973416. Its totient is φ = 1187300966400.

The previous prime is 1211223201187. The next prime is 1211223201257. The reversal of 1211223201233 is 3321023221121.

It can be written as a sum of positive squares in 4 ways, for example, as 417383186704 + 793840014529 = 646052^2 + 890977^2 .

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 1211223201233 - 2²⁴ = 1211206424017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211223201199 and 1211223201208.

It is not an unprimeable number, because it can be changed into a prime (1211223201283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33866288 + ... + 33902033.

It is an arithmetic number, because the mean of its divisors is an integer number (154410121677).

Almost surely, 2^{1211223201233} is an apocalyptic number.

It is an amenable number.

1211223201233 is a deficient number, since it is larger than the sum of its proper divisors (24057772183).

1211223201233 is an equidigital number, since it uses as much as digits as its factorization.

1211223201233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67768675.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1211223201233 its reverse (3321023221121), we get a palindrome (4532246422354).

The spelling of 1211223201233 in words is "one trillion, two hundred eleven billion, two hundred twenty-three million, two hundred one thousand, two hundred thirty-three".