120771021 has 8 divisors (see below), whose sum is σ = 184032064. Its totient is φ = 69012000.

The previous prime is 120771017. The next prime is 120771041. The reversal of 120771021 is 120177021.

It is a happy number.

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

It is not a de Polignac number, because 120771021 - 2² = 120771017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 5751001 = 120771021 / (1 + 2 + 0 + 7 + 7 + 1 + 0 + 2 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120771041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2875480 + ... + 2875521.

It is an arithmetic number, because the mean of its divisors is an integer number (23004008).

Almost surely, 2^120771021 is an apocalyptic number.

It is an amenable number.

120771021 is a deficient number, since it is larger than the sum of its proper divisors (63261043).

120771021 is an equidigital number, since it uses as much as digits as its factorization.

120771021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5751011.

The product of its (nonzero) digits is 196, while the sum is 21.

The square root of 120771021 is about 10989.5869349125. The cubic root of 120771021 is about 494.2965500227.

The spelling of 120771021 in words is "one hundred twenty million, seven hundred seventy-one thousand, twenty-one".