121222120201999 has 2 divisors, whose sum is σ = 121222120202000. Its totient is φ = 121222120201998.

The previous prime is 121222120201991. The next prime is 121222120202119. The reversal of 121222120201999 is 999102021222121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121222120201999 - 2³ = 121222120201991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121222120201991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60611060100999 + 60611060101000.

It is an arithmetic number, because the mean of its divisors is an integer number (60611060101000).

Almost surely, 2^{121222120201999} is an apocalyptic number.

121222120201999 is a deficient number, since it is larger than the sum of its proper divisors (1).

121222120201999 is an equidigital number, since it uses as much as digits as its factorization.

121222120201999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 43.

The spelling of 121222120201999 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred twenty million, two hundred one thousand, nine hundred ninety-nine".