121211022089 has 2 divisors, whose sum is σ = 121211022090. Its totient is φ = 121211022088.

The previous prime is 121211022043. The next prime is 121211022167. The reversal of 121211022089 is 980220112121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104533882489 + 16677139600 = 323317^2 + 129140^2 .

It is an emirp because it is prime and its reverse (980220112121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121211022089 - 2²⁰ = 121209973513 is a prime.

It is a super-2 number, since 2×121211022089² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121211022389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605511044 + 60605511045.

It is an arithmetic number, because the mean of its divisors is an integer number (60605511045).

Almost surely, 2^121211022089 is an apocalyptic number.

It is an amenable number.

121211022089 is a deficient number, since it is larger than the sum of its proper divisors (1).

121211022089 is an equidigital number, since it uses as much as digits as its factorization.

121211022089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 29.

The spelling of 121211022089 in words is "one hundred twenty-one billion, two hundred eleven million, twenty-two thousand, eighty-nine".