12161370 has 32 divisors (see below), whose sum is σ = 31433472. Its totient is φ = 2993472.

The previous prime is 12161351. The next prime is 12161417. The reversal of 12161370 is 7316121.

12161370 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15202 + ... + 15981.

It is an arithmetic number, because the mean of its divisors is an integer number (982296).

Almost surely, 2^12161370 is an apocalyptic number.

12161370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12161370 is an abundant number, since it is smaller than the sum of its proper divisors (19272102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12161370 is a wasteful number, since it uses less digits than its factorization.

12161370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31206.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 12161370 is about 3487.3155865221. The cubic root of 12161370 is about 229.9645187863.

Adding to 12161370 its reverse (7316121), we get a palindrome (19477491).

The spelling of 12161370 in words is "twelve million, one hundred sixty-one thousand, three hundred seventy".