12315022514 has 4 divisors (see below), whose sum is σ = 18472533774. Its totient is φ = 6157511256.

The previous prime is 12315022507. The next prime is 12315022541. The reversal of 12315022514 is 41522051321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41522051321 = 449 ⋅92476729.

It can be written as a sum of positive squares in only one way, i.e., 11171433025 + 1143589489 = 105695^2 + 33817^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3078755627 + ... + 3078755630.

Almost surely, 2^12315022514 is an apocalyptic number.

12315022514 is a deficient number, since it is larger than the sum of its proper divisors (6157511260).

12315022514 is an equidigital number, since it uses as much as digits as its factorization.

12315022514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6157511259.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 12315022514 its reverse (41522051321), we get a palindrome (53837073835).

The spelling of 12315022514 in words is "twelve billion, three hundred fifteen million, twenty-two thousand, five hundred fourteen".