12020001201021 has 48 divisors (see below), whose sum is σ = 18548028273600. Its totient is φ = 6899658670080.

The previous prime is 12020001200989. The next prime is 12020001201071. The reversal of 12020001201021 is 12010210002021.

It is not a de Polignac number, because 12020001201021 - 2⁵ = 12020001200989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12020001200988 and 12020001201006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020001201071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26793085 + ... + 27238013.

It is an arithmetic number, because the mean of its divisors is an integer number (386417255700).

Almost surely, 2^{12020001201021} is an apocalyptic number.

12020001201021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12020001201021 is a deficient number, since it is larger than the sum of its proper divisors (6528027072579).

12020001201021 is a wasteful number, since it uses less digits than its factorization.

12020001201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448890 (or 448879 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12020001201021 its reverse (12010210002021), we get a palindrome (24030211203042).

The spelling of 12020001201021 in words is "twelve trillion, twenty billion, one million, two hundred one thousand, twenty-one".