120271021 has 4 divisors (see below), whose sum is σ = 129522652. Its totient is φ = 111019392.

The previous prime is 120271013. The next prime is 120271027. The reversal of 120271021 is 120172021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26936100 + 93334921 = 5190^2 + 9661^2 .

It is a cyclic number.

It is not a de Polignac number, because 120271021 - 2³ = 120271013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120270986 and 120271004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120271027) 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, 4625796 + ... + 4625821.

It is an arithmetic number, because the mean of its divisors is an integer number (32380663).

Almost surely, 2^120271021 is an apocalyptic number.

It is an amenable number.

120271021 is a deficient number, since it is larger than the sum of its proper divisors (9251631).

120271021 is an equidigital number, since it uses as much as digits as its factorization.

120271021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9251630.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 120271021 is about 10966.8145329444. The cubic root of 120271021 is about 493.6134663666.

The spelling of 120271021 in words is "one hundred twenty million, two hundred seventy-one thousand, twenty-one".