12122202021 has 8 divisors (see below), whose sum is σ = 16253232480. Its totient is φ = 8036319792.

The previous prime is 12122202007. The next prime is 12122202091. The reversal of 12122202021 is 12020222121.

12122202021 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 a de Polignac number, because none of the positive numbers 2^k-12122202021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122202091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11286430 + ... + 11287503.

It is an arithmetic number, because the mean of its divisors is an integer number (2031654060).

Almost surely, 2^12122202021 is an apocalyptic number.

It is an amenable number.

12122202021 is a deficient number, since it is larger than the sum of its proper divisors (4131030459).

12122202021 is a wasteful number, since it uses less digits than its factorization.

12122202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22574115.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12122202021 its reverse (12020222121), we get a palindrome (24142424142).

The spelling of 12122202021 in words is "twelve billion, one hundred twenty-two million, two hundred two thousand, twenty-one".