12012021221011 has 8 divisors (see below), whose sum is σ = 13832818331904. Its totient is φ = 10217422629960.

The previous prime is 12012021220973. The next prime is 12012021221029. The reversal of 12012021221011 is 11012212021021.

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

It is not a de Polignac number, because 12012021221011 - 2²⁷ = 12011887003283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012021225011) 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, 6549628975 + ... + 6549630808.

It is an arithmetic number, because the mean of its divisors is an integer number (1729102291488).

Almost surely, 2^{12012021221011} is an apocalyptic number.

12012021221011 is a deficient number, since it is larger than the sum of its proper divisors (1820797110893).

12012021221011 is a wasteful number, since it uses less digits than its factorization.

12012021221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13099259921.

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

Adding to 12012021221011 its reverse (11012212021021), we get a palindrome (23024233242032).

The spelling of 12012021221011 in words is "twelve trillion, twelve billion, twenty-one million, two hundred twenty-one thousand, eleven".