3608102100221 has 8 divisors (see below), whose sum is σ = 3820848805944. Its totient is φ = 3395411550720.

The previous prime is 3608102100217. The next prime is 3608102100233. The reversal of 3608102100221 is 1220012018063.

It can be written as a sum of positive squares in 4 ways, for example, as 178620343225 + 3429481756996 = 422635^2 + 1851886^2 .

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 3608102100221 - 2² = 3608102100217 is a prime.

It is a super-2 number, since 2×3608102100221² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3608102100821) 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, 13906730 + ... + 14163803.

It is an arithmetic number, because the mean of its divisors is an integer number (477606100743).

Almost surely, 2^{3608102100221} is an apocalyptic number.

It is an amenable number.

3608102100221 is a deficient number, since it is larger than the sum of its proper divisors (212746705723).

3608102100221 is a wasteful number, since it uses less digits than its factorization.

3608102100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28078111.

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 3608102100221 its reverse (1220012018063), we get a palindrome (4828114118284).

The spelling of 3608102100221 in words is "three trillion, six hundred eight billion, one hundred two million, one hundred thousand, two hundred twenty-one".