120201993 has 12 divisors (see below), whose sum is σ = 173754048. Its totient is φ = 80075160.

The previous prime is 120201971. The next prime is 120202001. The reversal of 120201993 is 399102021.

It is not a de Polignac number, because 120201993 - 2⁸ = 120201737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120271993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10308 + ... + 18618.

It is an arithmetic number, because the mean of its divisors is an integer number (14479504).

Almost surely, 2^120201993 is an apocalyptic number.

It is an amenable number.

120201993 is a deficient number, since it is larger than the sum of its proper divisors (53552055).

120201993 is a wasteful number, since it uses less digits than its factorization.

120201993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9924 (or 9921 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 120201993 is about 10963.6669504322. Note that the first 3 decimals coincide. The cubic root of 120201993 is about 493.5190139353.

The spelling of 120201993 in words is "one hundred twenty million, two hundred one thousand, nine hundred ninety-three".