12123151 has 2 divisors, whose sum is σ = 12123152. Its totient is φ = 12123150.

The previous prime is 12123107. The next prime is 12123173. The reversal of 12123151 is 15132121.

It is a strong prime.

It is an emirp because it is prime and its reverse (15132121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12123151 - 2⁹ = 12122639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12123101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061575 + 6061576.

It is an arithmetic number, because the mean of its divisors is an integer number (6061576).

Almost surely, 2^12123151 is an apocalyptic number.

12123151 is a deficient number, since it is larger than the sum of its proper divisors (1).

12123151 is an equidigital number, since it uses as much as digits as its factorization.

12123151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60, while the sum is 16.

The square root of 12123151 is about 3481.8315582463. The cubic root of 12123151 is about 229.7233662133.

Adding to 12123151 its reverse (15132121), we get a palindrome (27255272).

The spelling of 12123151 in words is "twelve million, one hundred twenty-three thousand, one hundred fifty-one".