12021112021121 has 8 divisors (see below), whose sum is σ = 13755651403200. Its totient is φ = 10290882055248.

The previous prime is 12021112021103. The next prime is 12021112021151. The reversal of 12021112021121 is 12112021112021.

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 12021112021121 - 2⁴² = 7623065510017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12021112021121.

It is not an unprimeable number, because it can be changed into a prime (12021112021151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1077348071 + ... + 1077359228.

It is an arithmetic number, because the mean of its divisors is an integer number (1719456425400).

Almost surely, 2^{12021112021121} is an apocalyptic number.

It is an amenable number.

12021112021121 is a deficient number, since it is larger than the sum of its proper divisors (1734539382079).

12021112021121 is an equidigital number, since it uses as much as digits as its factorization.

12021112021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154708103.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12021112021121 its reverse (12112021112021), we get a palindrome (24133133133142).

It can be divided in two parts, 12021112021 and 121, that multiplied together give a palindrome (1454554554541).

The spelling of 12021112021121 in words is "twelve trillion, twenty-one billion, one hundred twelve million, twenty-one thousand, one hundred twenty-one".