12022212011021 has 4 divisors (see below), whose sum is σ = 12091704566172. Its totient is φ = 11952719455872.

The previous prime is 12022212011009. The next prime is 12022212011041. The reversal of 12022212011021 is 12011021222021.

12022212011021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6911583162121 + 5110628848900 = 2628989^2 + 2260670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12022212011021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022212011041) 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, 34746277316 + ... + 34746277661.

It is an arithmetic number, because the mean of its divisors is an integer number (3022926141543).

Almost surely, 2^{12022212011021} is an apocalyptic number.

It is an amenable number.

12022212011021 is a deficient number, since it is larger than the sum of its proper divisors (69492555151).

12022212011021 is an equidigital number, since it uses as much as digits as its factorization.

12022212011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69492555150.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12022212011021 its reverse (12011021222021), we get a palindrome (24033233233042).

The spelling of 12022212011021 in words is "twelve trillion, twenty-two billion, two hundred twelve million, eleven thousand, twenty-one".