12202112122021 has 8 divisors (see below), whose sum is σ = 12499771264344. Its totient is φ = 11904455201280.

The previous prime is 12202112122009. The next prime is 12202112122097. The reversal of 12202112122021 is 12022121120221.

12202112122021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 15652512100 + 12186459609921 = 125110^2 + 3490911^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12202112122021 - 2⁹ = 12202112121509 is a prime.

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 12202112122021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12202112822021) 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, 18174115 + ... + 18833551.

It is an arithmetic number, because the mean of its divisors is an integer number (1562471408043).

Almost surely, 2^{12202112122021} is an apocalyptic number.

It is an amenable number.

12202112122021 is a deficient number, since it is larger than the sum of its proper divisors (297659142323).

12202112122021 is an equidigital number, since it uses as much as digits as its factorization.

12202112122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110791.

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

Adding to 12202112122021 its reverse (12022121120221), we get a palindrome (24224233242242).

The spelling of 12202112122021 in words is "twelve trillion, two hundred two billion, one hundred twelve million, one hundred twenty-two thousand, twenty-one".