21700108241 has 8 divisors (see below), whose sum is σ = 25878390144. Its totient is φ = 17791392960.

The previous prime is 21700108237. The next prime is 21700108277. The reversal of 21700108241 is 14280100712.

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 21700108241 - 2² = 21700108237 is a prime.

It is a super-2 number, since 2×21700108241² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21700108241.

It is not an unprimeable number, because it can be changed into a prime (21700108231) 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, 67391480 + ... + 67391801.

It is an arithmetic number, because the mean of its divisors is an integer number (3234798768).

Almost surely, 2^21700108241 is an apocalyptic number.

It is an amenable number.

21700108241 is a deficient number, since it is larger than the sum of its proper divisors (4178281903).

21700108241 is a wasteful number, since it uses less digits than its factorization.

21700108241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134783311.

The product of its (nonzero) digits is 896, while the sum is 26.

Adding to 21700108241 its reverse (14280100712), we get a palindrome (35980208953).

The spelling of 21700108241 in words is "twenty-one billion, seven hundred million, one hundred eight thousand, two hundred forty-one".