103802180721 has 4 divisors (see below), whose sum is σ = 138402907632. Its totient is φ = 69201453812.

The previous prime is 103802180701. The next prime is 103802180723. The reversal of 103802180721 is 127081208301.

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: 127081208301 = 3 ⋅42360402767.

It is a cyclic number.

It is not a de Polignac number, because 103802180721 - 2¹¹ = 103802178673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (103802180723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17300363451 + ... + 17300363456.

It is an arithmetic number, because the mean of its divisors is an integer number (34600726908).

Almost surely, 2^103802180721 is an apocalyptic number.

It is an amenable number.

103802180721 is a deficient number, since it is larger than the sum of its proper divisors (34600726911).

103802180721 is an equidigital number, since it uses as much as digits as its factorization.

103802180721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34600726910.

The product of its (nonzero) digits is 5376, while the sum is 33.

The spelling of 103802180721 in words is "one hundred three billion, eight hundred two million, one hundred eighty thousand, seven hundred twenty-one".