12222002222021 has 4 divisors (see below), whose sum is σ = 12224474814912. Its totient is φ = 12219529629132.

The previous prime is 12222002221981. The next prime is 12222002222039. The reversal of 12222002222021 is 12022220022221.

12222002222021 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12222002222021 - 2²² = 12221998027717 is a prime.

It is a super-2 number, since 2×12222002222021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12222002221984 and 12222002222002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222002222051) 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, 1236289031 + ... + 1236298916.

It is an arithmetic number, because the mean of its divisors is an integer number (3056118703728).

Almost surely, 2^{12222002222021} is an apocalyptic number.

It is an amenable number.

12222002222021 is a deficient number, since it is larger than the sum of its proper divisors (2472592891).

12222002222021 is an equidigital number, since it uses as much as digits as its factorization.

12222002222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472592890.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 12222002222021 its reverse (12022220022221), we get a palindrome (24244222244242).

The spelling of 12222002222021 in words is "twelve trillion, two hundred twenty-two billion, two million, two hundred twenty-two thousand, twenty-one".