121220122999 has 2 divisors, whose sum is σ = 121220123000. Its totient is φ = 121220122998.

The previous prime is 121220122997. The next prime is 121220123021. The reversal of 121220122999 is 999221022121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121220122999 - 2¹ = 121220122997 is a prime.

Together with 121220122997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121220122997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610061499 + 60610061500.

It is an arithmetic number, because the mean of its divisors is an integer number (60610061500).

Almost surely, 2^121220122999 is an apocalyptic number.

121220122999 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220122999 is an equidigital number, since it uses as much as digits as its factorization.

121220122999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 121220122999 in words is "one hundred twenty-one billion, two hundred twenty million, one hundred twenty-two thousand, nine hundred ninety-nine".