20012371 has 2 divisors, whose sum is σ = 20012372. Its totient is φ = 20012370.

The previous prime is 20012347. The next prime is 20012381. The reversal of 20012371 is 17321002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20012371 - 2¹¹ = 20010323 is a prime.

It is not a weakly prime, because it can be changed into another prime (20012341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006185 + 10006186.

It is an arithmetic number, because the mean of its divisors is an integer number (10006186).

Almost surely, 2^20012371 is an apocalyptic number.

20012371 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012371 is an equidigital number, since it uses as much as digits as its factorization.

20012371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 20012371 is about 4473.5188610310. The cubic root of 20012371 is about 271.4977168913.

Adding to 20012371 its reverse (17321002), we get a palindrome (37333373).

It can be divided in two parts, 200 and 12371, that multiplied together give a triangular number (2474200 = T₂₂₂₄).

The spelling of 20012371 in words is "twenty million, twelve thousand, three hundred seventy-one".