12221002423 has 8 divisors (see below), whose sum is σ = 13974222240. Its totient is φ = 10469623200.

The previous prime is 12221002421. The next prime is 12221002429. The reversal of 12221002423 is 32420012221.

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

It is a cyclic number.

It is not a de Polignac number, because 12221002423 - 2¹ = 12221002421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12221002423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221002421) 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, 445888 + ... + 472501.

It is an arithmetic number, because the mean of its divisors is an integer number (1746777780).

Almost surely, 2^12221002423 is an apocalyptic number.

12221002423 is a deficient number, since it is larger than the sum of its proper divisors (1753219817).

12221002423 is an equidigital number, since it uses as much as digits as its factorization.

12221002423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920297.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12221002423 its reverse (32420012221), we get a palindrome (44641014644).

The spelling of 12221002423 in words is "twelve billion, two hundred twenty-one million, two thousand, four hundred twenty-three".