12021071 has 2 divisors, whose sum is σ = 12021072. Its totient is φ = 12021070.

The previous prime is 12021067. The next prime is 12021131. The reversal of 12021071 is 17012021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12021071 - 2² = 12021067 is a prime.

It is a super-2 number, since 2×12021071² = 289012295974082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010535 + 6010536.

It is an arithmetic number, because the mean of its divisors is an integer number (6010536).

Almost surely, 2^12021071 is an apocalyptic number.

12021071 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021071 is an equidigital number, since it uses as much as digits as its factorization.

12021071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 12021071 is about 3467.1416181056. The cubic root of 12021071 is about 229.0767716764.

Adding to 12021071 its reverse (17012021), we get a palindrome (29033092).

The spelling of 12021071 in words is "twelve million, twenty-one thousand, seventy-one".