12191622 has 8 divisors (see below), whose sum is σ = 24383256. Its totient is φ = 4063872.

The previous prime is 12191593. The next prime is 12191651. The reversal of 12191622 is 22619121.

It is an interprime number because it is at equal distance from previous prime (12191593) and next prime (12191651).

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

12191622 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 12191592 and 12191601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1015963 + ... + 1015974.

It is an arithmetic number, because the mean of its divisors is an integer number (3047907).

Almost surely, 2^12191622 is an apocalyptic number.

12191622 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12191622 is a wasteful number, since it uses less digits than its factorization.

12191622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031942.

The product of its digits is 432, while the sum is 24.

The square root of 12191622 is about 3491.6503261352. The cubic root of 12191622 is about 230.1550435394.

The spelling of 12191622 in words is "twelve million, one hundred ninety-one thousand, six hundred twenty-two".