118282021 has 8 divisors (see below), whose sum is σ = 138960864. Its totient is φ = 99257520.

The previous prime is 118281967. The next prime is 118282027. The reversal of 118282021 is 120282811.

118282021 = T₃₄ + T₃₅ + ... + T₈₉₁.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118282021 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 (118282027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413431 + ... + 413716.

It is an arithmetic number, because the mean of its divisors is an integer number (17370108).

Almost surely, 2^118282021 is an apocalyptic number.

118282021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

118282021 is a deficient number, since it is larger than the sum of its proper divisors (20678843).

118282021 is a wasteful number, since it uses less digits than its factorization.

118282021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827171.

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 118282021 is about 10875.7538129548. The cubic root of 118282021 is about 490.8772581418.

The spelling of 118282021 in words is "one hundred eighteen million, two hundred eighty-two thousand, twenty-one".