12105311622 has 32 divisors (see below), whose sum is σ = 24371254752. Its totient is φ = 4008420864.

The previous prime is 12105311611. The next prime is 12105311627. The reversal of 12105311622 is 22611350121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12105311592 and 12105311601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12105311627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 549288 + ... + 570900.

It is an arithmetic number, because the mean of its divisors is an integer number (761601711).

Almost surely, 2^12105311622 is an apocalyptic number.

12105311622 is an abundant number, since it is smaller than the sum of its proper divisors (12265943130).

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

12105311622 is a wasteful number, since it uses less digits than its factorization.

12105311622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22232.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 12105311622 its reverse (22611350121), we get a palindrome (34716661743).

The spelling of 12105311622 in words is "twelve billion, one hundred five million, three hundred eleven thousand, six hundred twenty-two".