12212011120121 has 2 divisors, whose sum is σ = 12212011120122. Its totient is φ = 12212011120120.

The previous prime is 12212011120081. The next prime is 12212011120139. The reversal of 12212011120121 is 12102111021221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9405752934400 + 2806258185721 = 3066880^2 + 1675189^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212011120121 - 2¹⁴ = 12212011103737 is a prime.

It is a super-2 number, since 2×12212011120121² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12212011120121.

It is not a weakly prime, because it can be changed into another prime (12212011120171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106005560060 + 6106005560061.

It is an arithmetic number, because the mean of its divisors is an integer number (6106005560061).

Almost surely, 2^{12212011120121} is an apocalyptic number.

It is an amenable number.

12212011120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212011120121 is an equidigital number, since it uses as much as digits as its factorization.

12212011120121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12212011120121 its reverse (12102111021221), we get a palindrome (24314122141342).

The spelling of 12212011120121 in words is "twelve trillion, two hundred twelve billion, eleven million, one hundred twenty thousand, one hundred twenty-one".