118920354221 has 4 divisors (see below), whose sum is σ = 118923670944. Its totient is φ = 118917037500.

The previous prime is 118920354197. The next prime is 118920354227. The reversal of 118920354221 is 122453029811.

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 118920354221 - 2¹⁸ = 118920092077 is a prime.

It is a super-3 number, since 3×118920354221³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118920354227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1603985 + ... + 1676486.

It is an arithmetic number, because the mean of its divisors is an integer number (29730917736).

Almost surely, 2^118920354221 is an apocalyptic number.

It is an amenable number.

118920354221 is a deficient number, since it is larger than the sum of its proper divisors (3316723).

118920354221 is an equidigital number, since it uses as much as digits as its factorization.

118920354221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3316722.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 118920354221 in words is "one hundred eighteen billion, nine hundred twenty million, three hundred fifty-four thousand, two hundred twenty-one".