12212021211127 has 2 divisors, whose sum is σ = 12212021211128. Its totient is φ = 12212021211126.

The previous prime is 12212021211017. The next prime is 12212021211197. The reversal of 12212021211127 is 72111212021221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12212021211127 - 2¹⁹ = 12212020686839 is a prime.

It is a super-2 number, since 2×12212021211127² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212021211197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106010605563 + 6106010605564.

It is an arithmetic number, because the mean of its divisors is an integer number (6106010605564).

Almost surely, 2^{12212021211127} is an apocalyptic number.

12212021211127 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212021211127 is an equidigital number, since it uses as much as digits as its factorization.

12212021211127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 25.

Adding to 12212021211127 its reverse (72111212021221), we get a palindrome (84323233232348).

The spelling of 12212021211127 in words is "twelve trillion, two hundred twelve billion, twenty-one million, two hundred eleven thousand, one hundred twenty-seven".