12210145 has 8 divisors (see below), whose sum is σ = 14729256. Its totient is φ = 9716736.

The previous prime is 12210137. The next prime is 12210173. The reversal of 12210145 is 54101221.

It can be written as a sum of positive squares in 4 ways, for example, as 369664 + 11840481 = 608^2 + 3441^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12210145 - 2³ = 12210137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5362 + ... + 7291.

It is an arithmetic number, because the mean of its divisors is an integer number (1841157).

Almost surely, 2^12210145 is an apocalyptic number.

It is an amenable number.

12210145 is a deficient number, since it is larger than the sum of its proper divisors (2519111).

12210145 is a wasteful number, since it uses less digits than its factorization.

12210145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12851.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 12210145 is about 3494.3017900576. The cubic root of 12210145 is about 230.2715444353.

Adding to 12210145 its reverse (54101221), we get a palindrome (66311366).

The spelling of 12210145 in words is "twelve million, two hundred ten thousand, one hundred forty-five".