20111323033 has 2 divisors, whose sum is σ = 20111323034. Its totient is φ = 20111323032.

The previous prime is 20111322971. The next prime is 20111323069. The reversal of 20111323033 is 33032311102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12501028864 + 7610294169 = 111808^2 + 87237^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20111323033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20111323033.

It is not a weakly prime, because it can be changed into another prime (20111323733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055661516 + 10055661517.

It is an arithmetic number, because the mean of its divisors is an integer number (10055661517).

Almost surely, 2^20111323033 is an apocalyptic number.

It is an amenable number.

20111323033 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111323033 is an equidigital number, since it uses as much as digits as its factorization.

20111323033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20111323033 its reverse (33032311102), we get a palindrome (53143634135).

The spelling of 20111323033 in words is "twenty billion, one hundred eleven million, three hundred twenty-three thousand, thirty-three".