12305553421 has 8 divisors (see below), whose sum is σ = 14241509120. Its totient is φ = 10414102608.

The previous prime is 12305553419. The next prime is 12305553473. The reversal of 12305553421 is 12435550321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12305553421 - 2¹ = 12305553419 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 (12305553121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11125626 + ... + 11126731.

It is an arithmetic number, because the mean of its divisors is an integer number (1780188640).

Almost surely, 2^12305553421 is an apocalyptic number.

It is an amenable number.

12305553421 is a deficient number, since it is larger than the sum of its proper divisors (1935955699).

12305553421 is an equidigital number, since it uses as much as digits as its factorization.

12305553421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22252443.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 12305553421 in words is "twelve billion, three hundred five million, five hundred fifty-three thousand, four hundred twenty-one".