21412044342100 has 18 divisors (see below), whose sum is σ = 46464136222574. Its totient is φ = 8564817736800.

The previous prime is 21412044342097. The next prime is 21412044342173. The reversal of 21412044342100 is 124344021412.

It can be written as a sum of positive squares in 3 ways, for example, as 1106674544196 + 20305369797904 = 1051986^2 + 4506148^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 107060221611 + ... + 107060221810.

Almost surely, 2^{21412044342100} is an apocalyptic number.

21412044342100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21412044342100 is an abundant number, since it is smaller than the sum of its proper divisors (25052091880474).

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

21412044342100 is a wasteful number, since it uses less digits than its factorization.

21412044342100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214120443435 (or 214120443428 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 21412044342100 its reverse (124344021412), we get a palindrome (21536388363512).

The spelling of 21412044342100 in words is "twenty-one trillion, four hundred twelve billion, forty-four million, three hundred forty-two thousand, one hundred".