21301442111 has 8 divisors (see below), whose sum is σ = 22263515520. Its totient is φ = 20342362392.

The previous prime is 21301442077. The next prime is 21301442117. The reversal of 21301442111 is 11124410312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21301442111 - 2¹⁴ = 21301425727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301442117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 733865 + ... + 762338.

It is an arithmetic number, because the mean of its divisors is an integer number (2782939440).

Almost surely, 2^21301442111 is an apocalyptic number.

21301442111 is a deficient number, since it is larger than the sum of its proper divisors (962073409).

21301442111 is a wasteful number, since it uses less digits than its factorization.

21301442111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496845.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21301442111 its reverse (11124410312), we get a palindrome (32425852423).

The spelling of 21301442111 in words is "twenty-one billion, three hundred one million, four hundred forty-two thousand, one hundred eleven".