12011112201021 has 16 divisors (see below), whose sum is σ = 16536562426368. Its totient is φ = 7746695654400.

The previous prime is 12011112201001. The next prime is 12011112201073. The reversal of 12011112201021 is 12010221111021.

It is a happy number.

It is not a de Polignac number, because 12011112201021 - 2¹⁰ = 12011112199997 is a prime.

It is a super-3 number, since 3×12011112201021³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011112201001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19774140 + ... + 20372501.

It is an arithmetic number, because the mean of its divisors is an integer number (1033535151648).

Almost surely, 2^{12011112201021} is an apocalyptic number.

It is an amenable number.

12011112201021 is a deficient number, since it is larger than the sum of its proper divisors (4525450225347).

12011112201021 is a wasteful number, since it uses less digits than its factorization.

12011112201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40149892.

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

Adding to 12011112201021 its reverse (12010221111021), we get a palindrome (24021333312042).

The spelling of 12011112201021 in words is "twelve trillion, eleven billion, one hundred twelve million, two hundred one thousand, twenty-one".