381110000221 has 16 divisors (see below), whose sum is σ = 386535240000. Its totient is φ = 375721100928.

The previous prime is 381110000111. The next prime is 381110000231. The reversal of 381110000221 is 122000011183.

It is a cyclic number.

It is not a de Polignac number, because 381110000221 - 2¹¹ = 381109998173 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 (381110000231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66288655 + ... + 66294403.

It is an arithmetic number, because the mean of its divisors is an integer number (24158452500).

Almost surely, 2^381110000221 is an apocalyptic number.

It is an amenable number.

381110000221 is a deficient number, since it is larger than the sum of its proper divisors (5425239779).

381110000221 is a wasteful number, since it uses less digits than its factorization.

381110000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8748.

The product of its (nonzero) digits is 96, while the sum is 19.

The spelling of 381110000221 in words is "three hundred eighty-one billion, one hundred ten million, two hundred twenty-one", and thus it is an aban number.