20013112237 has 2 divisors, whose sum is σ = 20013112238. Its totient is φ = 20013112236.

The previous prime is 20013112201. The next prime is 20013112271. The reversal of 20013112237 is 73221131002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19751772681 + 261339556 = 140541^2 + 16166^2 .

It is a cyclic number.

It is not a de Polignac number, because 20013112237 - 2⁷ = 20013112109 is a prime.

It is a super-2 number, since 2×20013112237² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20013112297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006556118 + 10006556119.

It is an arithmetic number, because the mean of its divisors is an integer number (10006556119).

Almost surely, 2^20013112237 is an apocalyptic number.

It is an amenable number.

20013112237 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013112237 is an equidigital number, since it uses as much as digits as its factorization.

20013112237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 20013112237 its reverse (73221131002), we get a palindrome (93234243239).

The spelling of 20013112237 in words is "twenty billion, thirteen million, one hundred twelve thousand, two hundred thirty-seven".