21101313041 has 2 divisors, whose sum is σ = 21101313042. Its totient is φ = 21101313040.

The previous prime is 21101313001. The next prime is 21101313049. The reversal of 21101313041 is 14031310112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11220953041 + 9880360000 = 105929^2 + 99400^2 .

It is a cyclic number.

It is not a de Polignac number, because 21101313041 - 2⁶ = 21101312977 is a prime.

It is not a weakly prime, because it can be changed into another prime (21101313049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550656520 + 10550656521.

It is an arithmetic number, because the mean of its divisors is an integer number (10550656521).

Almost surely, 2^21101313041 is an apocalyptic number.

It is an amenable number.

21101313041 is a deficient number, since it is larger than the sum of its proper divisors (1).

21101313041 is an equidigital number, since it uses as much as digits as its factorization.

21101313041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21101313041 its reverse (14031310112), we get a palindrome (35132623153).

The spelling of 21101313041 in words is "twenty-one billion, one hundred one million, three hundred thirteen thousand, forty-one".