12101222100 has 108 divisors (see below), whose sum is σ = 38485335392. Its totient is φ = 2933620800.

The previous prime is 12101222069. The next prime is 12101222101. The reversal of 12101222100 is 122210121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101222101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 130384 + ... + 202983.

Almost surely, 2^12101222100 is an apocalyptic number.

12101222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12101222100 is an abundant number, since it is smaller than the sum of its proper divisors (26384113292).

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

12101222100 is a wasteful number, since it uses less digits than its factorization.

12101222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333406 (or 333388 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12101222100 its reverse (122210121), we get a palindrome (12223432221).

The spelling of 12101222100 in words is "twelve billion, one hundred one million, two hundred twenty-two thousand, one hundred".