12210158 has 4 divisors (see below), whose sum is σ = 18315240. Its totient is φ = 6105078.

The previous prime is 12210137. The next prime is 12210173. The reversal of 12210158 is 85101221.

It is a happy number.

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

It is a super-3 number, since 3×12210158³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3052538 + ... + 3052541.

It is an arithmetic number, because the mean of its divisors is an integer number (4578810).

Almost surely, 2^12210158 is an apocalyptic number.

12210158 is a deficient number, since it is larger than the sum of its proper divisors (6105082).

12210158 is an equidigital number, since it uses as much as digits as its factorization.

12210158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6105081.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 12210158 is about 3494.3036502285. The cubic root of 12210158 is about 230.2716261577.

Adding to 12210158 its reverse (85101221), we get a palindrome (97311379).

The spelling of 12210158 in words is "twelve million, two hundred ten thousand, one hundred fifty-eight".