38811238082221 has 16 divisors (see below), whose sum is σ = 43481454061248. Its totient is φ = 34335677692800.

The previous prime is 38811238082189. The next prime is 38811238082233. The reversal of 38811238082221 is 12228083211883.

It is a happy number.

It is not a de Polignac number, because 38811238082221 - 2⁵ = 38811238082189 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 (38811238082291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108203775 + ... + 108561868.

It is an arithmetic number, because the mean of its divisors is an integer number (2717590878828).

Almost surely, 2^{38811238082221} is an apocalyptic number.

It is an amenable number.

38811238082221 is a deficient number, since it is larger than the sum of its proper divisors (4670215979027).

38811238082221 is a wasteful number, since it uses less digits than its factorization.

38811238082221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216766092.

The product of its (nonzero) digits is 589824, while the sum is 49.

The spelling of 38811238082221 in words is "thirty-eight trillion, eight hundred eleven billion, two hundred thirty-eight million, eighty-two thousand, two hundred twenty-one".