12021130304421 has 16 divisors (see below), whose sum is σ = 18812991571584. Its totient is φ = 6683562794304.

The previous prime is 12021130304419. The next prime is 12021130304467. The reversal of 12021130304421 is 12440303112021.

It is not a de Polignac number, because 12021130304421 - 2¹ = 12021130304419 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12021130304391 and 12021130304400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021130304471) 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, 7735604310 + ... + 7735605863.

It is an arithmetic number, because the mean of its divisors is an integer number (1175811973224).

Almost surely, 2^{12021130304421} is an apocalyptic number.

It is an amenable number.

12021130304421 is a deficient number, since it is larger than the sum of its proper divisors (6791861267163).

12021130304421 is a wasteful number, since it uses less digits than its factorization.

12021130304421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15471210220.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 12021130304421 its reverse (12440303112021), we get a palindrome (24461433416442).

The spelling of 12021130304421 in words is "twelve trillion, twenty-one billion, one hundred thirty million, three hundred four thousand, four hundred twenty-one".