12120357 has 4 divisors (see below), whose sum is σ = 16160480. Its totient is φ = 8080236.

The previous prime is 12120343. The next prime is 12120391. The reversal of 12120357 is 75302121.

12120357 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12120357 - 2⁶ = 12120293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120307) 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, 2020057 + ... + 2020062.

It is an arithmetic number, because the mean of its divisors is an integer number (4040120).

Almost surely, 2^12120357 is an apocalyptic number.

It is an amenable number.

12120357 is a deficient number, since it is larger than the sum of its proper divisors (4040123).

12120357 is an equidigital number, since it uses as much as digits as its factorization.

12120357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040122.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 12120357 is about 3481.4303095136. The cubic root of 12120357 is about 229.7057168855.

Adding to 12120357 its reverse (75302121), we get a palindrome (87422478).

The spelling of 12120357 in words is "twelve million, one hundred twenty thousand, three hundred fifty-seven".