15154231121 has 2 divisors, whose sum is σ = 15154231122. Its totient is φ = 15154231120.

The previous prime is 15154231091. The next prime is 15154231129. The reversal of 15154231121 is 12113245151.

15154231121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15076156225 + 78074896 = 122785^2 + 8836^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15154231121 is a prime.

It is not a weakly prime, because it can be changed into another prime (15154231129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7577115560 + 7577115561.

It is an arithmetic number, because the mean of its divisors is an integer number (7577115561).

Almost surely, 2^15154231121 is an apocalyptic number.

It is an amenable number.

15154231121 is a deficient number, since it is larger than the sum of its proper divisors (1).

15154231121 is an equidigital number, since it uses as much as digits as its factorization.

15154231121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 26.

Adding to 15154231121 its reverse (12113245151), we get a palindrome (27267476272).

The spelling of 15154231121 in words is "fifteen billion, one hundred fifty-four million, two hundred thirty-one thousand, one hundred twenty-one".