12020001021011 has 4 divisors (see below), whose sum is σ = 12027228924672. Its totient is φ = 12012773117352.

The previous prime is 12020001020987. The next prime is 12020001021043. The reversal of 12020001021011 is 11012010002021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12020001021011 - 2³⁰ = 12018927279187 is a prime.

It is a super-3 number, since 3×12020001021011³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020001020983 and 12020001021001.

It is not an unprimeable number, because it can be changed into a prime (12020001027011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3613949336 + ... + 3613952661.

It is an arithmetic number, because the mean of its divisors is an integer number (3006807231168).

Almost surely, 2^{12020001021011} is an apocalyptic number.

12020001021011 is a deficient number, since it is larger than the sum of its proper divisors (7227903661).

12020001021011 is an equidigital number, since it uses as much as digits as its factorization.

12020001021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7227903660.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12020001021011 its reverse (11012010002021), we get a palindrome (23032011023032).

The spelling of 12020001021011 in words is "twelve trillion, twenty billion, one million, twenty-one thousand, eleven".