108981222061 has 4 divisors (see below), whose sum is σ = 108987671232. Its totient is φ = 108974772892.

The previous prime is 108981222059. The next prime is 108981222089. The reversal of 108981222061 is 160222189801.

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, and also an emirpimes, since its reverse is a distinct semiprime: 160222189801 = 107 ⋅1497403643.

It is a cyclic number.

It is not a de Polignac number, because 108981222061 - 2¹ = 108981222059 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 (108981322061) 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 3 ways as a sum of consecutive naturals, for example, 3199171 + ... + 3233056.

It is an arithmetic number, because the mean of its divisors is an integer number (27246917808).

Almost surely, 2^108981222061 is an apocalyptic number.

It is an amenable number.

108981222061 is a deficient number, since it is larger than the sum of its proper divisors (6449171).

108981222061 is an equidigital number, since it uses as much as digits as its factorization.

108981222061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6449170.

The product of its (nonzero) digits is 27648, while the sum is 40.

The spelling of 108981222061 in words is "one hundred eight billion, nine hundred eighty-one million, two hundred twenty-two thousand, sixty-one".