121122212999 has 2 divisors, whose sum is σ = 121122213000. Its totient is φ = 121122212998.

The previous prime is 121122212977. The next prime is 121122213031. The reversal of 121122212999 is 999212221121.

It is a weak prime.

It is an emirp because it is prime and its reverse (999212221121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121122212999 - 2¹² = 121122208903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121122212399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561106499 + 60561106500.

It is an arithmetic number, because the mean of its divisors is an integer number (60561106500).

Almost surely, 2^121122212999 is an apocalyptic number.

121122212999 is a deficient number, since it is larger than the sum of its proper divisors (1).

121122212999 is an equidigital number, since it uses as much as digits as its factorization.

121122212999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 41.

It can be divided in two parts, 1211222 and 12999, that added together give a palindrome (1224221).

The spelling of 121122212999 in words is "one hundred twenty-one billion, one hundred twenty-two million, two hundred twelve thousand, nine hundred ninety-nine".