33113072221231 has 2 divisors, whose sum is σ = 33113072221232. Its totient is φ = 33113072221230.

The previous prime is 33113072221183. The next prime is 33113072221247. The reversal of 33113072221231 is 13212227031133.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 33113072221231 - 2⁹ = 33113072220719 is a prime.

It is a super-2 number, since 2×33113072221231² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33113072221193 and 33113072221202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33113072225231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16556536110615 + 16556536110616.

It is an arithmetic number, because the mean of its divisors is an integer number (16556536110616).

Almost surely, 2^{33113072221231} is an apocalyptic number.

33113072221231 is a deficient number, since it is larger than the sum of its proper divisors (1).

33113072221231 is an equidigital number, since it uses as much as digits as its factorization.

33113072221231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

Adding to 33113072221231 its reverse (13212227031133), we get a palindrome (46325299252364).

The spelling of 33113072221231 in words is "thirty-three trillion, one hundred thirteen billion, seventy-two million, two hundred twenty-one thousand, two hundred thirty-one".