12002111220021 has 16 divisors (see below), whose sum is σ = 17234504574336. Its totient is φ = 7385612947776.

The previous prime is 12002111220019. The next prime is 12002111220061. The reversal of 12002111220021 is 12002211120021.

It is not a de Polignac number, because 12002111220021 - 2¹ = 12002111220019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002111220061) 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, 5315305 + ... + 7228878.

It is an arithmetic number, because the mean of its divisors is an integer number (1077156535896).

Almost surely, 2^{12002111220021} is an apocalyptic number.

It is an amenable number.

12002111220021 is a deficient number, since it is larger than the sum of its proper divisors (5232393354315).

12002111220021 is a wasteful number, since it uses less digits than its factorization.

12002111220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12568732.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12002111220021 its reverse (12002211120021), we get a palindrome (24004322340042).

The spelling of 12002111220021 in words is "twelve trillion, two billion, one hundred eleven million, two hundred twenty thousand, twenty-one".