12021120121021 has 8 divisors (see below), whose sum is σ = 13418924786784. Its totient is φ = 10674144715920.

The previous prime is 12021120120967. The next prime is 12021120121103. The reversal of 12021120121021 is 12012102112021.

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 12021120121021 - 2²⁷ = 12020985903293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12021120120986 and 12021120121004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021120121121) 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, 12707314666 + ... + 12707315611.

It is an arithmetic number, because the mean of its divisors is an integer number (1677365598348).

Almost surely, 2^{12021120121021} is an apocalyptic number.

12021120121021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12021120121021 is a deficient number, since it is larger than the sum of its proper divisors (1397804665763).

12021120121021 is a wasteful number, since it uses less digits than its factorization.

12021120121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25414630331.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12021120121021 its reverse (12012102112021), we get a palindrome (24033222233042).

It can be divided in two parts, 12021 and 120121021, that multiplied together give a palindrome (1443974793441).

The spelling of 12021120121021 in words is "twelve trillion, twenty-one billion, one hundred twenty million, one hundred twenty-one thousand, twenty-one".