12021112121001 has 8 divisors (see below), whose sum is σ = 16036554405024. Its totient is φ = 8009872292160.

The previous prime is 12021112120999. The next prime is 12021112121003. The reversal of 12021112121001 is 10012121112021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12021112120999) and next prime (12021112121003).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12021112121001 - 2¹ = 12021112120999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12021112121003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1050607120 + ... + 1050618561.

It is an arithmetic number, because the mean of its divisors is an integer number (2004569300628).

Almost surely, 2^{12021112121001} is an apocalyptic number.

It is an amenable number.

12021112121001 is a deficient number, since it is larger than the sum of its proper divisors (4015442284023).

12021112121001 is a wasteful number, since it uses less digits than its factorization.

12021112121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2101227591.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12021112121001 its reverse (10012121112021), we get a palindrome (22033233233022).

The spelling of 12021112121001 in words is "twelve trillion, twenty-one billion, one hundred twelve million, one hundred twenty-one thousand, one".