12011022100021 has 8 divisors (see below), whose sum is σ = 13765768755264. Its totient is φ = 10265997033600.

The previous prime is 12011022100019. The next prime is 12011022100067. The reversal of 12011022100021 is 12000122011021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12011022100021 - 2¹ = 12011022100019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011022099974 and 12011022100010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011022100321) 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, 2430394555 + ... + 2430399496.

It is an arithmetic number, because the mean of its divisors is an integer number (1720721094408).

Almost surely, 2^{12011022100021} is an apocalyptic number.

It is an amenable number.

12011022100021 is a deficient number, since it is larger than the sum of its proper divisors (1754746655243).

12011022100021 is an equidigital number, since it uses as much as digits as its factorization.

12011022100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4860794411.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12011022100021 its reverse (12000122011021), we get a palindrome (24011144111042).

The spelling of 12011022100021 in words is "twelve trillion, eleven billion, twenty-two million, one hundred thousand, twenty-one".