15212233123 has 2 divisors, whose sum is σ = 15212233124. Its totient is φ = 15212233122.

The previous prime is 15212233079. The next prime is 15212233139. The reversal of 15212233123 is 32133221251.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15212233123 is a prime.

It is not a weakly prime, because it can be changed into another prime (15212234123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7606116561 + 7606116562.

It is an arithmetic number, because the mean of its divisors is an integer number (7606116562).

Almost surely, 2^15212233123 is an apocalyptic number.

15212233123 is a deficient number, since it is larger than the sum of its proper divisors (1).

15212233123 is an equidigital number, since it uses as much as digits as its factorization.

15212233123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

Adding to 15212233123 its reverse (32133221251), we get a palindrome (47345454374).

The spelling of 15212233123 in words is "fifteen billion, two hundred twelve million, two hundred thirty-three thousand, one hundred twenty-three".