12212350440 has 64 divisors (see below), whose sum is σ = 37014788160. Its totient is φ = 3223050240.

The previous prime is 12212350387. The next prime is 12212350441. The reversal of 12212350440 is 4405321221.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 12212350440.

It is not an unprimeable number, because it can be changed into a prime (12212350441) 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, 512946 + ... + 536225.

It is an arithmetic number, because the mean of its divisors is an integer number (578356065).

Almost surely, 2^12212350440 is an apocalyptic number.

12212350440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212350440 is an abundant number, since it is smaller than the sum of its proper divisors (24802437720).

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

12212350440 is a wasteful number, since it uses less digits than its factorization.

12212350440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049282 (or 1049278 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 12212350440 its reverse (4405321221), we get a palindrome (16617671661).

The spelling of 12212350440 in words is "twelve billion, two hundred twelve million, three hundred fifty thousand, four hundred forty".