12222012112021 has 2 divisors, whose sum is σ = 12222012112022. Its totient is φ = 12222012112020.

The previous prime is 12222012112019. The next prime is 12222012112027. The reversal of 12222012112021 is 12021121022221.

12222012112021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11558544845796 + 663467266225 = 3399786^2 + 814535^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222012112021 - 2¹ = 12222012112019 is a prime.

Together with 12222012112019, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12222012112021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12222012112027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111006056010 + 6111006056011.

It is an arithmetic number, because the mean of its divisors is an integer number (6111006056011).

Almost surely, 2^{12222012112021} is an apocalyptic number.

It is an amenable number.

12222012112021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222012112021 is an equidigital number, since it uses as much as digits as its factorization.

12222012112021 is an evil number, because the sum of its binary digits is even.

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

Adding to 12222012112021 its reverse (12021121022221), we get a palindrome (24243133134242).

The spelling of 12222012112021 in words is "twelve trillion, two hundred twenty-two billion, twelve million, one hundred twelve thousand, twenty-one".