12021420052002 has 16 divisors (see below), whose sum is σ = 24629250838752. Its totient is φ = 3909404894880.

The previous prime is 12021420052001. The next prime is 12021420052007. The reversal of 12021420052002 is 20025002412021.

It is a self number, because there is not a number n which added to its sum of digits gives 12021420052002.

It is not an unprimeable number, because it can be changed into a prime (12021420052001) 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, 24433780348 + ... + 24433780839.

It is an arithmetic number, because the mean of its divisors is an integer number (1539328177422).

Almost surely, 2^{12021420052002} is an apocalyptic number.

12021420052002 is an abundant number, since it is smaller than the sum of its proper divisors (12607830786750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12021420052002 is a wasteful number, since it uses less digits than its factorization.

12021420052002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48867561233.

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 12021420052002 its reverse (20025002412021), we get a palindrome (32046422464023).

The spelling of 12021420052002 in words is "twelve trillion, twenty-one billion, four hundred twenty million, fifty-two thousand, two".