12120951 has 4 divisors (see below), whose sum is σ = 16161272. Its totient is φ = 8080632.

The previous prime is 12120947. The next prime is 12120967. The reversal of 12120951 is 15902121.

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

It is not a de Polignac number, because 12120951 - 2² = 12120947 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 (12120751) 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, 2020156 + ... + 2020161.

It is an arithmetic number, because the mean of its divisors is an integer number (4040318).

Almost surely, 2^12120951 is an apocalyptic number.

12120951 is a deficient number, since it is larger than the sum of its proper divisors (4040321).

12120951 is an equidigital number, since it uses as much as digits as its factorization.

12120951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040320.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 12120951 is about 3481.5156182330. The cubic root of 12120951 is about 229.7094693318.

The spelling of 12120951 in words is "twelve million, one hundred twenty thousand, nine hundred fifty-one".