12421211023 has 8 divisors (see below), whose sum is σ = 13379318288. Its totient is φ = 11463479424.

The previous prime is 12421211021. The next prime is 12421211029. The reversal of 12421211023 is 32011212421.

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 12421211023 - 2¹ = 12421211021 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 (12421211021) 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, 23265 + ... + 159322.

It is an arithmetic number, because the mean of its divisors is an integer number (1672414786).

Almost surely, 2^12421211023 is an apocalyptic number.

12421211023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12421211023 is a deficient number, since it is larger than the sum of its proper divisors (958107265).

12421211023 is a wasteful number, since it uses less digits than its factorization.

12421211023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187833.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 12421211023 its reverse (32011212421), we get a palindrome (44432423444).

The spelling of 12421211023 in words is "twelve billion, four hundred twenty-one million, two hundred eleven thousand, twenty-three".