12011211002221 has 8 divisors (see below), whose sum is σ = 12032145792000. Its totient is φ = 11990279155920.

The previous prime is 12011211002179. The next prime is 12011211002279. The reversal of 12011211002221 is 12220011211021.

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 12011211002221 - 2⁹ = 12011211001709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011211002195 and 12011211002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011211302221) 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, 7512951 + ... + 8970331.

It is an arithmetic number, because the mean of its divisors is an integer number (1504018224000).

Almost surely, 2^{12011211002221} is an apocalyptic number.

It is an amenable number.

12011211002221 is a deficient number, since it is larger than the sum of its proper divisors (20934789779).

12011211002221 is a wasteful number, since it uses less digits than its factorization.

12011211002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471739.

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

Adding to 12011211002221 its reverse (12220011211021), we get a palindrome (24231222213242).

The spelling of 12011211002221 in words is "twelve trillion, eleven billion, two hundred eleven million, two thousand, two hundred twenty-one".