1200100031233 has 4 divisors (see below), whose sum is σ = 1200166562608. Its totient is φ = 1200033499860.

The previous prime is 1200100031231. The next prime is 1200100031303. The reversal of 1200100031233 is 3321300010021.

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 a cyclic number.

It is not a de Polignac number, because 1200100031233 - 2¹ = 1200100031231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200100031231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33238623 + ... + 33274708.

It is an arithmetic number, because the mean of its divisors is an integer number (300041640652).

Almost surely, 2^{1200100031233} is an apocalyptic number.

It is an amenable number.

1200100031233 is a deficient number, since it is larger than the sum of its proper divisors (66531375).

1200100031233 is an equidigital number, since it uses as much as digits as its factorization.

1200100031233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66531374.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 1200100031233 its reverse (3321300010021), we get a palindrome (4521400041254).

The spelling of 1200100031233 in words is "one trillion, two hundred billion, one hundred million, thirty-one thousand, two hundred thirty-three".