12421958597 has 4 divisors (see below), whose sum is σ = 12538051776. Its totient is φ = 12305865420.

The previous prime is 12421958587. The next prime is 12421958609. The reversal of 12421958597 is 79585912421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79585912421 = 1163 ⋅68431567.

It is a cyclic number.

It is not a de Polignac number, because 12421958597 - 2¹⁴ = 12421942213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421958537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58046429 + ... + 58046642.

It is an arithmetic number, because the mean of its divisors is an integer number (3134512944).

Almost surely, 2^12421958597 is an apocalyptic number.

It is an amenable number.

12421958597 is a deficient number, since it is larger than the sum of its proper divisors (116093179).

12421958597 is a wasteful number, since it uses less digits than its factorization.

12421958597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116093178.

The product of its digits is 1814400, while the sum is 53.

The spelling of 12421958597 in words is "twelve billion, four hundred twenty-one million, nine hundred fifty-eight thousand, five hundred ninety-seven".