12142002111221 has 16 divisors (see below), whose sum is σ = 12482920108800. Its totient is φ = 11805265355520.

The previous prime is 12142002111181. The next prime is 12142002111247. The reversal of 12142002111221 is 12211120024121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12142002111221 is a prime.

It is a super-2 number, since 2×12142002111221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12142002111193 and 12142002111202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12142002111271) 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, 32146856 + ... + 32522366.

It is an arithmetic number, because the mean of its divisors is an integer number (780182506800).

Almost surely, 2^{12142002111221} is an apocalyptic number.

It is an amenable number.

12142002111221 is a deficient number, since it is larger than the sum of its proper divisors (340917997579).

12142002111221 is a wasteful number, since it uses less digits than its factorization.

12142002111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381076.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12142002111221 its reverse (12211120024121), we get a palindrome (24353122135342).

The spelling of 12142002111221 in words is "twelve trillion, one hundred forty-two billion, two million, one hundred eleven thousand, two hundred twenty-one".