13122222100 has 36 divisors (see below), whose sum is σ = 30665626684. Its totient is φ = 4845127680.

The previous prime is 13122222031. The next prime is 13122222103. The reversal of 13122222100 is 122222131.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 4681022724 + 8441199376 = 68418^2 + 91876^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13122222103) 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 11 ways as a sum of consecutive naturals, for example, 5045709 + ... + 5048308.

Almost surely, 2^13122222100 is an apocalyptic number.

13122222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13122222100 is an abundant number, since it is smaller than the sum of its proper divisors (17543404584).

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

13122222100 is a wasteful number, since it uses less digits than its factorization.

13122222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10094044 (or 10094037 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 13122222100 its reverse (122222131), we get a palindrome (13244444231).

The spelling of 13122222100 in words is "thirteen billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred".