20003223137 has 2 divisors, whose sum is σ = 20003223138. Its totient is φ = 20003223136.

The previous prime is 20003223101. The next prime is 20003223143. The reversal of 20003223137 is 73132230002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17741174416 + 2262048721 = 133196^2 + 47561^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20003223137 is a prime.

It is a super-2 number, since 2×20003223137² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20003223337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001611568 + 10001611569.

It is an arithmetic number, because the mean of its divisors is an integer number (10001611569).

Almost surely, 2^20003223137 is an apocalyptic number.

It is an amenable number.

20003223137 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003223137 is an equidigital number, since it uses as much as digits as its factorization.

20003223137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 23.

Adding to 20003223137 its reverse (73132230002), we get a palindrome (93135453139).

The spelling of 20003223137 in words is "twenty billion, three million, two hundred twenty-three thousand, one hundred thirty-seven".