118825021 has 4 divisors (see below), whose sum is σ = 135800032. Its totient is φ = 101850012.

The previous prime is 118825013. The next prime is 118825067. The reversal of 118825021 is 120528811.

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: 120528811 = 13 ⋅9271447.

It is a cyclic number.

It is not a de Polignac number, because 118825021 - 2³ = 118825013 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 (118825321) 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, 8487495 + ... + 8487508.

It is an arithmetic number, because the mean of its divisors is an integer number (33950008).

Almost surely, 2^118825021 is an apocalyptic number.

It is an amenable number.

118825021 is a deficient number, since it is larger than the sum of its proper divisors (16975011).

118825021 is an equidigital number, since it uses as much as digits as its factorization.

118825021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16975010.

The product of its (nonzero) digits is 1280, while the sum is 28.

The square root of 118825021 is about 10900.6890149201. The cubic root of 118825021 is about 491.6272721221.

The spelling of 118825021 in words is "one hundred eighteen million, eight hundred twenty-five thousand, twenty-one".