121212202211 has 2 divisors, whose sum is σ = 121212202212. Its totient is φ = 121212202210.

The previous prime is 121212202183. The next prime is 121212202289. The reversal of 121212202211 is 112202212121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121212202211 - 2¹⁴ = 121212185827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121212202211.

It is not a weakly prime, because it can be changed into another prime (121212202511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60606101105 + 60606101106.

It is an arithmetic number, because the mean of its divisors is an integer number (60606101106).

Almost surely, 2^121212202211 is an apocalyptic number.

121212202211 is a deficient number, since it is larger than the sum of its proper divisors (1).

121212202211 is an equidigital number, since it uses as much as digits as its factorization.

121212202211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121212202211 its reverse (112202212121), we get a palindrome (233414414332).

The spelling of 121212202211 in words is "one hundred twenty-one billion, two hundred twelve million, two hundred two thousand, two hundred eleven".