20003323111237 has 2 divisors, whose sum is σ = 20003323111238. Its totient is φ = 20003323111236.

The previous prime is 20003323111217. The next prime is 20003323111309. The reversal of 20003323111237 is 73211132330002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16968459479841 + 3034863631396 = 4119279^2 + 1742086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20003323111237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20003323111207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001661555618 + 10001661555619.

It is an arithmetic number, because the mean of its divisors is an integer number (10001661555619).

Almost surely, 2^{20003323111237} is an apocalyptic number.

It is an amenable number.

20003323111237 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003323111237 is an equidigital number, since it uses as much as digits as its factorization.

20003323111237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 28.

Adding to 20003323111237 its reverse (73211132330002), we get a palindrome (93214455441239).

The spelling of 20003323111237 in words is "twenty trillion, three billion, three hundred twenty-three million, one hundred eleven thousand, two hundred thirty-seven".