12010121021221 has 8 divisors (see below), whose sum is σ = 12037802299200. Its totient is φ = 11982468930432.

The previous prime is 12010121021203. The next prime is 12010121021237. The reversal of 12010121021221 is 12212012101021.

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 12010121021221 - 2⁵ = 12010121021189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12010121021195 and 12010121021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010121024221) 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, 6472771 + ... + 8118928.

It is an arithmetic number, because the mean of its divisors is an integer number (1504725287400).

Almost surely, 2^{12010121021221} is an apocalyptic number.

It is an amenable number.

12010121021221 is a deficient number, since it is larger than the sum of its proper divisors (27681277979).

12010121021221 is a wasteful number, since it uses less digits than its factorization.

12010121021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14593595.

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

Adding to 12010121021221 its reverse (12212012101021), we get a palindrome (24222133122242).

The spelling of 12010121021221 in words is "twelve trillion, ten billion, one hundred twenty-one million, twenty-one thousand, two hundred twenty-one".