12181051 has 2 divisors, whose sum is σ = 12181052. Its totient is φ = 12181050.

The previous prime is 12181031. The next prime is 12181063. The reversal of 12181051 is 15018121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12181051 - 2¹¹ = 12179003 is a prime.

It is not a weakly prime, because it can be changed into another prime (12181031) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6090525 + 6090526.

It is an arithmetic number, because the mean of its divisors is an integer number (6090526).

Almost surely, 2^12181051 is an apocalyptic number.

12181051 is a deficient number, since it is larger than the sum of its proper divisors (1).

12181051 is an equidigital number, since it uses as much as digits as its factorization.

12181051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 19.

The square root of 12181051 is about 3490.1362437590. The cubic root of 12181051 is about 230.0885040615.

Adding to 12181051 its reverse (15018121), we get a palindrome (27199172).

The spelling of 12181051 in words is "twelve million, one hundred eighty-one thousand, fifty-one".