21301041511 has 2 divisors, whose sum is σ = 21301041512. Its totient is φ = 21301041510.

The previous prime is 21301041473. The next prime is 21301041521. The reversal of 21301041511 is 11514010312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21301041511 - 2¹³ = 21301033319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21301041521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650520755 + 10650520756.

It is an arithmetic number, because the mean of its divisors is an integer number (10650520756).

Almost surely, 2^21301041511 is an apocalyptic number.

21301041511 is a deficient number, since it is larger than the sum of its proper divisors (1).

21301041511 is an equidigital number, since it uses as much as digits as its factorization.

21301041511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 21301041511 its reverse (11514010312), we get a palindrome (32815051823).

The spelling of 21301041511 in words is "twenty-one billion, three hundred one million, forty-one thousand, five hundred eleven".