118212020 has 24 divisors (see below), whose sum is σ = 254301768. Its totient is φ = 46131200.

The previous prime is 118212013. The next prime is 118212023. The reversal of 118212020 is 20212811.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 98596 + 118113424 = 314^2 + 10868^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 118212020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118212023) 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, 71261 + ... + 72900.

It is an arithmetic number, because the mean of its divisors is an integer number (10595907).

Almost surely, 2^118212020 is an apocalyptic number.

118212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118212020 is an abundant number, since it is smaller than the sum of its proper divisors (136089748).

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

118212020 is a wasteful number, since it uses less digits than its factorization.

118212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144211 (or 144209 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 118212020 is about 10872.5351229601. The cubic root of 118212020 is about 490.7804029604.

Adding to 118212020 its reverse (20212811), we get a palindrome (138424831).

The spelling of 118212020 in words is "one hundred eighteen million, two hundred twelve thousand, twenty".