118213011 has 24 divisors (see below), whose sum is σ = 195652704. Its totient is φ = 67374720.

The previous prime is 118212989. The next prime is 118213021. The reversal of 118213011 is 110312811.

It is a happy number.

It is not a de Polignac number, because 118213011 - 2¹⁴ = 118196627 is a prime.

It is a super-2 number, since 2×118213011² = 27948631939372242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (118213021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24295 + ... + 28751.

It is an arithmetic number, because the mean of its divisors is an integer number (8152196).

Almost surely, 2^118213011 is an apocalyptic number.

118213011 is a deficient number, since it is larger than the sum of its proper divisors (77439693).

118213011 is a wasteful number, since it uses less digits than its factorization.

118213011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4891 (or 4888 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

The square root of 118213011 is about 10872.5806964124. The cubic root of 118213011 is about 490.7817744003.

Adding to 118213011 its reverse (110312811), we get a palindrome (228525822).

The spelling of 118213011 in words is "one hundred eighteen million, two hundred thirteen thousand, eleven".