12012021101021 has 8 divisors (see below), whose sum is σ = 12294091928064. Its totient is φ = 11731054270320.

The previous prime is 12012021101009. The next prime is 12012021101029. The reversal of 12012021101021 is 12010112021021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12012021101021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012021100987 and 12012021101005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012021101029) 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, 275977070 + ... + 276020591.

It is an arithmetic number, because the mean of its divisors is an integer number (1536761491008).

Almost surely, 2^{12012021101021} is an apocalyptic number.

It is an amenable number.

12012021101021 is a deficient number, since it is larger than the sum of its proper divisors (282070827043).

12012021101021 is an equidigital number, since it uses as much as digits as its factorization.

12012021101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551998171.

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

Adding to 12012021101021 its reverse (12010112021021), we get a palindrome (24022133122042).

The spelling of 12012021101021 in words is "twelve trillion, twelve billion, twenty-one million, one hundred one thousand, twenty-one".