33220231211231 has 2 divisors, whose sum is σ = 33220231211232. Its totient is φ = 33220231211230.

The previous prime is 33220231211203. The next prime is 33220231211309. The reversal of 33220231211231 is 13211213202233.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33220231211231 is a prime.

It is a super-2 number, since 2×33220231211231² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33220231211231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33220231241231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16610115605615 + 16610115605616.

It is an arithmetic number, because the mean of its divisors is an integer number (16610115605616).

Almost surely, 2^{33220231211231} is an apocalyptic number.

33220231211231 is a deficient number, since it is larger than the sum of its proper divisors (1).

33220231211231 is an equidigital number, since it uses as much as digits as its factorization.

33220231211231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 33220231211231 its reverse (13211213202233), we get a palindrome (46431444413464).

The spelling of 33220231211231 in words is "thirty-three trillion, two hundred twenty billion, two hundred thirty-one million, two hundred eleven thousand, two hundred thirty-one".