21101307067 has 8 divisors (see below), whose sum is σ = 21242632320. Its totient is φ = 20960254080.

The previous prime is 21101307049. The next prime is 21101307113. The reversal of 21101307067 is 76070310112.

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 21101307067 - 2¹⁹ = 21100782779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21101307037) 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, 88659 + ... + 223747.

It is an arithmetic number, because the mean of its divisors is an integer number (2655329040).

Almost surely, 2^21101307067 is an apocalyptic number.

21101307067 is a deficient number, since it is larger than the sum of its proper divisors (141325253).

21101307067 is a wasteful number, since it uses less digits than its factorization.

21101307067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136133.

The product of its (nonzero) digits is 1764, while the sum is 28.

Adding to 21101307067 its reverse (76070310112), we get a palindrome (97171617179).

The spelling of 21101307067 in words is "twenty-one billion, one hundred one million, three hundred seven thousand, sixty-seven".