12212326650 has 24 divisors (see below), whose sum is σ = 30286570464. Its totient is φ = 3256620400.

The previous prime is 12212326613. The next prime is 12212326681. The reversal of 12212326650 is 5662321221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40707606 + ... + 40707905.

It is an arithmetic number, because the mean of its divisors is an integer number (1261940436).

Almost surely, 2^12212326650 is an apocalyptic number.

12212326650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12212326650 is an abundant number, since it is smaller than the sum of its proper divisors (18074243814).

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

12212326650 is a wasteful number, since it uses less digits than its factorization.

12212326650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81415526 (or 81415521 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 12212326650 its reverse (5662321221), we get a palindrome (17874647871).

The spelling of 12212326650 in words is "twelve billion, two hundred twelve million, three hundred twenty-six thousand, six hundred fifty".