120221138 has 8 divisors (see below), whose sum is σ = 188172288. Its totient is φ = 57497044.

The previous prime is 120221137. The next prime is 120221147. The reversal of 120221138 is 831122021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (120221137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1306706 + ... + 1306797.

It is an arithmetic number, because the mean of its divisors is an integer number (23521536).

Almost surely, 2^120221138 is an apocalyptic number.

120221138 is a deficient number, since it is larger than the sum of its proper divisors (67951150).

120221138 is a wasteful number, since it uses less digits than its factorization.

120221138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2613528.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 120221138 is about 10964.5400268320. The cubic root of 120221138 is about 493.5452140553.

Adding to 120221138 its reverse (831122021), we get a palindrome (951343159).

The spelling of 120221138 in words is "one hundred twenty million, two hundred twenty-one thousand, one hundred thirty-eight".