12020011112021 has 16 divisors (see below), whose sum is σ = 13178088581760. Its totient is φ = 10872917729280.

The previous prime is 12020011111943. The next prime is 12020011112059. The reversal of 12020011112021 is 12021111002021.

It is a cyclic number.

It is not a de Polignac number, because 12020011112021 - 2²⁶ = 12019944003157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020011111987 and 12020011112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020011111021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284705 + ... + 4911321.

It is an arithmetic number, because the mean of its divisors is an integer number (823630536360).

Almost surely, 2^{12020011112021} is an apocalyptic number.

12020011112021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12020011112021 is a deficient number, since it is larger than the sum of its proper divisors (1158077469739).

12020011112021 is a wasteful number, since it uses less digits than its factorization.

12020011112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4627804.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12020011112021 its reverse (12021111002021), we get a palindrome (24041122114042).

The spelling of 12020011112021 in words is "twelve trillion, twenty billion, eleven million, one hundred twelve thousand, twenty-one".