21101344141 has 2 divisors, whose sum is σ = 21101344142. Its totient is φ = 21101344140.

The previous prime is 21101344139. The next prime is 21101344183. The reversal of 21101344141 is 14144310112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20756164900 + 345179241 = 144070^2 + 18579^2 .

It is a cyclic number.

It is not a de Polignac number, because 21101344141 - 2¹ = 21101344139 is a prime.

Together with 21101344139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21101344441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550672070 + 10550672071.

It is an arithmetic number, because the mean of its divisors is an integer number (10550672071).

Almost surely, 2^21101344141 is an apocalyptic number.

It is an amenable number.

21101344141 is a deficient number, since it is larger than the sum of its proper divisors (1).

21101344141 is an equidigital number, since it uses as much as digits as its factorization.

21101344141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 21101344141 its reverse (14144310112), we get a palindrome (35245654253).

The spelling of 21101344141 in words is "twenty-one billion, one hundred one million, three hundred forty-four thousand, one hundred forty-one".