12100043420 has 24 divisors (see below), whose sum is σ = 26904803184. Its totient is φ = 4555310336.

The previous prime is 12100043419. The next prime is 12100043441. The reversal of 12100043420 is 2434000121.

It is a super-2 number, since 2×12100043420² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17793842 + ... + 17794521.

It is an arithmetic number, because the mean of its divisors is an integer number (1121033466).

Almost surely, 2^12100043420 is an apocalyptic number.

12100043420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12100043420 is an abundant number, since it is smaller than the sum of its proper divisors (14804759764).

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

12100043420 is a wasteful number, since it uses less digits than its factorization.

12100043420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35588389 (or 35588387 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 12100043420 its reverse (2434000121), we get a palindrome (14534043541).

The spelling of 12100043420 in words is "twelve billion, one hundred million, forty-three thousand, four hundred twenty".