12454466021 has 4 divisors (see below), whose sum is σ = 12530873952. Its totient is φ = 12378058092.

The previous prime is 12454465997. The next prime is 12454466083. The reversal of 12454466021 is 12066445421.

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: 12066445421 = 751 ⋅16067171.

It is a cyclic number.

It is not a de Polignac number, because 12454466021 - 2¹⁸ = 12454203877 is a prime.

It is a super-2 number, since 2×12454466021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12454406021) 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, 38203721 + ... + 38204046.

It is an arithmetic number, because the mean of its divisors is an integer number (3132718488).

Almost surely, 2^12454466021 is an apocalyptic number.

It is an amenable number.

12454466021 is a deficient number, since it is larger than the sum of its proper divisors (76407931).

12454466021 is an equidigital number, since it uses as much as digits as its factorization.

12454466021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76407930.

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 12454466021 in words is "twelve billion, four hundred fifty-four million, four hundred sixty-six thousand, twenty-one".