108281342021 has 4 divisors (see below), whose sum is σ = 109651992000. Its totient is φ = 106910692044.

The previous prime is 108281341967. The next prime is 108281342023. The reversal of 108281342021 is 120243182801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 108281342021 - 2²² = 108277147717 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 (108281342023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685324871 + ... + 685325028.

It is an arithmetic number, because the mean of its divisors is an integer number (27412998000).

Almost surely, 2^108281342021 is an apocalyptic number.

It is an amenable number.

108281342021 is a deficient number, since it is larger than the sum of its proper divisors (1370649979).

108281342021 is an equidigital number, since it uses as much as digits as its factorization.

108281342021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370649978.

The product of its (nonzero) digits is 6144, while the sum is 32.

The spelling of 108281342021 in words is "one hundred eight billion, two hundred eighty-one million, three hundred forty-two thousand, twenty-one".