12100322440 has 16 divisors (see below), whose sum is σ = 27225725580. Its totient is φ = 4840128960.

The previous prime is 12100322419. The next prime is 12100322447. The reversal of 12100322440 is 4422300121.

It can be written as a sum of positive squares in 2 ways, for example, as 12094280676 + 6041764 = 109974^2 + 2458^2 .

It is not an unprimeable number, because it can be changed into a prime (12100322447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151253991 + ... + 151254070.

Almost surely, 2^12100322440 is an apocalyptic number.

12100322440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12100322440 is an abundant number, since it is smaller than the sum of its proper divisors (15125403140).

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

12100322440 is a wasteful number, since it uses less digits than its factorization.

12100322440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302508072 (or 302508068 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12100322440 its reverse (4422300121), we get a palindrome (16522622561).

The spelling of 12100322440 in words is "twelve billion, one hundred million, three hundred twenty-two thousand, four hundred forty".