12021300323121 has 48 divisors (see below), whose sum is σ = 17598781710848. Its totient is φ = 7285853836800.

The previous prime is 12021300323017. The next prime is 12021300323203. The reversal of 12021300323121 is 12132300312021.

It is not a de Polignac number, because 12021300323121 - 2¹⁵ = 12021300290353 is a prime.

It is a super-2 number, since 2×12021300323121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021300323821) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 816861 + ... + 4970901.

Almost surely, 2^{12021300323121} is an apocalyptic number.

It is an amenable number.

12021300323121 is a deficient number, since it is larger than the sum of its proper divisors (5577481387727).

12021300323121 is a wasteful number, since it uses less digits than its factorization.

12021300323121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4154170 (or 4154141 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 12021300323121 its reverse (12132300312021), we get a palindrome (24153600635142).

The spelling of 12021300323121 in words is "twelve trillion, twenty-one billion, three hundred million, three hundred twenty-three thousand, one hundred twenty-one".