12021300032121 has 16 divisors (see below), whose sum is σ = 17809687499520. Its totient is φ = 8014040668080.

The previous prime is 12021300032111. The next prime is 12021300032143. The reversal of 12021300032121 is 12123000312021.

12021300032121 is a `hidden beast` number, since 1 + 2 + 0 + 21 + 300 + 0 + 321 + 21 = 666.

It is not a de Polignac number, because 12021300032121 - 2⁶ = 12021300032057 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12021300032094 and 12021300032103.

It is not an unprimeable number, because it can be changed into a prime (12021300032111) 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, 3035505 + ... + 5766878.

It is an arithmetic number, because the mean of its divisors is an integer number (1113105468720).

Almost surely, 2^{12021300032121} is an apocalyptic number.

It is an amenable number.

12021300032121 is a deficient number, since it is larger than the sum of its proper divisors (5788387467399).

12021300032121 is an equidigital number, since it uses as much as digits as its factorization.

12021300032121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8852973 (or 8852967 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12021300032121 its reverse (12123000312021), we get a palindrome (24144300344142).

The spelling of 12021300032121 in words is "twelve trillion, twenty-one billion, three hundred million, thirty-two thousand, one hundred twenty-one".