21100043141234 has 8 divisors (see below), whose sum is σ = 31659403779180. Its totient is φ = 10546908548176.

The previous prime is 21100043141207. The next prime is 21100043141257. The reversal of 21100043141234 is 43214134000112.

It can be written as a sum of positive squares in 2 ways, for example, as 18196648657009 + 2903394484225 = 4265753^2 + 1703935^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 1556502749 + ... + 1556516304.

Almost surely, 2^{21100043141234} is an apocalyptic number.

21100043141234 is a deficient number, since it is larger than the sum of its proper divisors (10559360637946).

21100043141234 is a wasteful number, since it uses less digits than its factorization.

21100043141234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3113022444.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 21100043141234 its reverse (43214134000112), we get a palindrome (64314177141346).

The spelling of 21100043141234 in words is "twenty-one trillion, one hundred billion, forty-three million, one hundred forty-one thousand, two hundred thirty-four".