120001209999949 has 2 divisors, whose sum is σ = 120001209999950. Its totient is φ = 120001209999948.

The previous prime is 120001209999857. The next prime is 120001209999961. The reversal of 120001209999949 is 949999902100021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111283658497449 + 8717551502500 = 10549107^2 + 2952550^2 .

It is a cyclic number.

It is not a de Polignac number, because 120001209999949 - 2¹⁹ = 120001209475661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120001209999149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60000604999974 + 60000604999975.

It is an arithmetic number, because the mean of its divisors is an integer number (60000604999975).

Almost surely, 2^{120001209999949} is an apocalyptic number.

It is an amenable number.

120001209999949 is a deficient number, since it is larger than the sum of its proper divisors (1).

120001209999949 is an equidigital number, since it uses as much as digits as its factorization.

120001209999949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8503056, while the sum is 64.

The spelling of 120001209999949 in words is "one hundred twenty trillion, one billion, two hundred nine million, nine hundred ninety-nine thousand, nine hundred forty-nine".