12220358 has 4 divisors (see below), whose sum is σ = 18330540. Its totient is φ = 6110178.

The previous prime is 12220333. The next prime is 12220361. The reversal of 12220358 is 85302221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85302221 = 5107 ⋅16703.

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, 3055088 + ... + 3055091.

It is an arithmetic number, because the mean of its divisors is an integer number (4582635).

Almost surely, 2^12220358 is an apocalyptic number.

12220358 is a deficient number, since it is larger than the sum of its proper divisors (6110182).

12220358 is an equidigital number, since it uses as much as digits as its factorization.

12220358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6110181.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 12220358 is about 3495.7628638110. The cubic root of 12220358 is about 230.3357289826.

Adding to 12220358 its reverse (85302221), we get a palindrome (97522579).

The spelling of 12220358 in words is "twelve million, two hundred twenty thousand, three hundred fifty-eight".