12021052454 has 4 divisors (see below), whose sum is σ = 18031578684. Its totient is φ = 6010526226.

The previous prime is 12021052453. The next prime is 12021052457. The reversal of 12021052454 is 45425012021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45425012021 = 97 ⋅468299093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021052453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3005263112 + ... + 3005263115.

It is an arithmetic number, because the mean of its divisors is an integer number (4507894671).

Almost surely, 2^12021052454 is an apocalyptic number.

12021052454 is a deficient number, since it is larger than the sum of its proper divisors (6010526230).

12021052454 is an equidigital number, since it uses as much as digits as its factorization.

12021052454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6010526229.

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 12021052454 its reverse (45425012021), we get a palindrome (57446064475).

The spelling of 12021052454 in words is "twelve billion, twenty-one million, fifty-two thousand, four hundred fifty-four".