120212021999 has 2 divisors, whose sum is σ = 120212022000. Its totient is φ = 120212021998.

The previous prime is 120212021959. The next prime is 120212022001. The reversal of 120212021999 is 999120212021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120212021999 - 2³⁶ = 51492545263 is a prime.

Together with 120212022001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120212021959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60106010999 + 60106011000.

It is an arithmetic number, because the mean of its divisors is an integer number (60106011000).

Almost surely, 2^120212021999 is an apocalyptic number.

120212021999 is a deficient number, since it is larger than the sum of its proper divisors (1).

120212021999 is an equidigital number, since it uses as much as digits as its factorization.

120212021999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 38.

The spelling of 120212021999 in words is "one hundred twenty billion, two hundred twelve million, twenty-one thousand, nine hundred ninety-nine".