12302421221 has 16 divisors (see below), whose sum is σ = 12661000704. Its totient is φ = 11948256384.

The previous prime is 12302421211. The next prime is 12302421223. The reversal of 12302421221 is 12212420321.

It is a cyclic number.

It is not a de Polignac number, because 12302421221 - 2¹⁰ = 12302420197 is a prime.

It is a super-2 number, since 2×12302421221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12302421193 and 12302421202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12302421223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3422201 + ... + 3425793.

It is an arithmetic number, because the mean of its divisors is an integer number (791312544).

Almost surely, 2^12302421221 is an apocalyptic number.

It is an amenable number.

12302421221 is a deficient number, since it is larger than the sum of its proper divisors (358579483).

12302421221 is a wasteful number, since it uses less digits than its factorization.

12302421221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4180.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12302421221 its reverse (12212420321), we get a palindrome (24514841542).

The spelling of 12302421221 in words is "twelve billion, three hundred two million, four hundred twenty-one thousand, two hundred twenty-one".