1211332101233 has 4 divisors (see below), whose sum is σ = 1211334792948. Its totient is φ = 1211329409520.

The previous prime is 1211332101229. The next prime is 1211332101247. The reversal of 1211332101233 is 3321012331121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 331473093169 + 879859008064 = 575737^2 + 938008^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211332101233 - 2² = 1211332101229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211332101199 and 1211332101208.

It is not an unprimeable number, because it can be changed into a prime (1211332101293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488966 + ... + 1631487.

It is an arithmetic number, because the mean of its divisors is an integer number (302833698237).

Almost surely, 2^{1211332101233} is an apocalyptic number.

It is an amenable number.

1211332101233 is a deficient number, since it is larger than the sum of its proper divisors (2691715).

1211332101233 is an equidigital number, since it uses as much as digits as its factorization.

1211332101233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691714.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1211332101233 its reverse (3321012331121), we get a palindrome (4532344432354).

The spelling of 1211332101233 in words is "one trillion, two hundred eleven billion, three hundred thirty-two million, one hundred one thousand, two hundred thirty-three".