12445154421 has 16 divisors (see below), whose sum is σ = 18986947200. Its totient is φ = 7102928448.

The previous prime is 12445154411. The next prime is 12445154431.

12445154421 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (12445154411) and next prime (12445154431).

It is not a de Polignac number, because 12445154421 - 2⁵ = 12445154389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12445154411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340026 + ... + 374843.

It is an arithmetic number, because the mean of its divisors is an integer number (1186684200).

Almost surely, 2^12445154421 is an apocalyptic number.

It is an amenable number.

12445154421 is a deficient number, since it is larger than the sum of its proper divisors (6541792779).

12445154421 is an equidigital number, since it uses as much as digits as its factorization.

12445154421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715708.

The product of its digits is 25600, while the sum is 33.

The spelling of 12445154421 in words is "twelve billion, four hundred forty-five million, one hundred fifty-four thousand, four hundred twenty-one".