11312212033 has 8 divisors (see below), whose sum is σ = 11729327400. Its totient is φ = 10896899328.

The previous prime is 11312212027. The next prime is 11312212069. The reversal of 11312212033 is 33021221311.

It can be written as a sum of positive squares in 4 ways, for example, as 1899913744 + 9412298289 = 43588^2 + 97017^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11312212033 is a prime.

It is a super-2 number, since 2×11312212033² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11312212033.

It is not an unprimeable number, because it can be changed into a prime (11312212073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437878 + ... + 462991.

It is an arithmetic number, because the mean of its divisors is an integer number (1466165925).

Almost surely, 2^11312212033 is an apocalyptic number.

It is an amenable number.

11312212033 is a deficient number, since it is larger than the sum of its proper divisors (417115367).

11312212033 is an equidigital number, since it uses as much as digits as its factorization.

11312212033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901331.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11312212033 its reverse (33021221311), we get a palindrome (44333433344).

The spelling of 11312212033 in words is "eleven billion, three hundred twelve million, two hundred twelve thousand, thirty-three".