20020201237 has 2 divisors, whose sum is σ = 20020201238. Its totient is φ = 20020201236.

The previous prime is 20020201183. The next prime is 20020201241. The reversal of 20020201237 is 73210202002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17489004516 + 2531196721 = 132246^2 + 50311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20020201237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20020201297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010100618 + 10010100619.

It is an arithmetic number, because the mean of its divisors is an integer number (10010100619).

Almost surely, 2^20020201237 is an apocalyptic number.

It is an amenable number.

20020201237 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020201237 is an equidigital number, since it uses as much as digits as its factorization.

20020201237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 19.

Adding to 20020201237 its reverse (73210202002), we get a palindrome (93230403239).

The spelling of 20020201237 in words is "twenty billion, twenty million, two hundred one thousand, two hundred thirty-seven".