21101344101 has 24 divisors (see below), whose sum is σ = 31747925664. Its totient is φ = 14005554480.

The previous prime is 21101344087. The next prime is 21101344123. The reversal of 21101344101 is 10144310112.

21101344101 is a `hidden beast` number, since 211 + 0 + 13 + 441 + 0 + 1 = 666.

It is not a de Polignac number, because 21101344101 - 2⁷ = 21101343973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101344141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136110 + ... + 246431.

It is an arithmetic number, because the mean of its divisors is an integer number (1322830236).

Almost surely, 2^21101344101 is an apocalyptic number.

It is an amenable number.

21101344101 is a deficient number, since it is larger than the sum of its proper divisors (10646581563).

21101344101 is an equidigital number, since it uses as much as digits as its factorization.

21101344101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382783 (or 382771 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21101344101 its reverse (10144310112), we get a palindrome (31245654213).

The spelling of 21101344101 in words is "twenty-one billion, one hundred one million, three hundred forty-four thousand, one hundred one".