21101130244143 has 6 divisors (see below), whose sum is σ = 30479410352664. Its totient is φ = 14067420162756.

The previous prime is 21101130244121. The next prime is 21101130244147. The reversal of 21101130244143 is 34144203110112.

It is a happy number.

21101130244143 is a `hidden beast` number, since 2 + 110 + 1 + 130 + 2 + 4 + 414 + 3 = 666.

It is not a de Polignac number, because 21101130244143 - 2⁸ = 21101130243887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101130244147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1172285013555 + ... + 1172285013572.

It is an arithmetic number, because the mean of its divisors is an integer number (5079901725444).

Almost surely, 2^{21101130244143} is an apocalyptic number.

21101130244143 is a deficient number, since it is larger than the sum of its proper divisors (9378280108521).

21101130244143 is a wasteful number, since it uses less digits than its factorization.

21101130244143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344570027133 (or 2344570027130 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 21101130244143 its reverse (34144203110112), we get a palindrome (55245333354255).

The spelling of 21101130244143 in words is "twenty-one trillion, one hundred one billion, one hundred thirty million, two hundred forty-four thousand, one hundred forty-three".