118021212 has 36 divisors (see below), whose sum is σ = 309383256. Its totient is φ = 39340080.

The previous prime is 118021201. The next prime is 118021219. The reversal of 118021212 is 212120811.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118021219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59739 + ... + 61682.

Almost surely, 2^118021212 is an apocalyptic number.

118021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

118021212 is an abundant number, since it is smaller than the sum of its proper divisors (191362044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

118021212 is a wasteful number, since it uses less digits than its factorization.

118021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121440 (or 121426 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 118021212 is about 10863.7568087656. The cubic root of 118021212 is about 490.5162018047.

The spelling of 118021212 in words is "one hundred eighteen million, twenty-one thousand, two hundred twelve".