20210412137 has 2 divisors, whose sum is σ = 20210412138. Its totient is φ = 20210412136.

The previous prime is 20210412097. The next prime is 20210412151. The reversal of 20210412137 is 73121401202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18994076761 + 1216335376 = 137819^2 + 34876^2 .

It is a cyclic number.

It is not a de Polignac number, because 20210412137 - 2³² = 15915444841 is a prime.

It is not a weakly prime, because it can be changed into another prime (20210412197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105206068 + 10105206069.

It is an arithmetic number, because the mean of its divisors is an integer number (10105206069).

Almost surely, 2^20210412137 is an apocalyptic number.

It is an amenable number.

20210412137 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210412137 is an equidigital number, since it uses as much as digits as its factorization.

20210412137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 20210412137 its reverse (73121401202), we get a palindrome (93331813339).

The spelling of 20210412137 in words is "twenty billion, two hundred ten million, four hundred twelve thousand, one hundred thirty-seven".