12122122021021 has 8 divisors (see below), whose sum is σ = 12760675780320. Its totient is φ = 11483622995472.

The previous prime is 12122122021001. The next prime is 12122122021033. The reversal of 12122122021021 is 12012022122121.

12122122021021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12122122021021 - 2¹⁹ = 12122121496733 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12122122021021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122122021001) 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, 13228435 + ... + 14115088.

It is an arithmetic number, because the mean of its divisors is an integer number (1595084472540).

Almost surely, 2^{12122122021021} is an apocalyptic number.

It is an amenable number.

12122122021021 is a deficient number, since it is larger than the sum of its proper divisors (638553759299).

12122122021021 is a wasteful number, since it uses less digits than its factorization.

12122122021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27366875.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12122122021021 its reverse (12012022122121), we get a palindrome (24134144143142).

The spelling of 12122122021021 in words is "twelve trillion, one hundred twenty-two billion, one hundred twenty-two million, twenty-one thousand, twenty-one".