12071951 has 2 divisors, whose sum is σ = 12071952. Its totient is φ = 12071950.

The previous prime is 12071947. The next prime is 12071959. The reversal of 12071951 is 15917021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12071951 - 2² = 12071947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12071951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12071959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6035975 + 6035976.

It is an arithmetic number, because the mean of its divisors is an integer number (6035976).

Almost surely, 2^12071951 is an apocalyptic number.

12071951 is a deficient number, since it is larger than the sum of its proper divisors (1).

12071951 is an equidigital number, since it uses as much as digits as its factorization.

12071951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 12071951 is about 3474.4713266913. The cubic root of 12071951 is about 229.3995110999.

Adding to 12071951 its reverse (15917021), we get a palindrome (27988972).

The spelling of 12071951 in words is "twelve million, seventy-one thousand, nine hundred fifty-one".