117801012 has 48 divisors (see below), whose sum is σ = 314979840. Its totient is φ = 33567072.

The previous prime is 117801001. The next prime is 117801017. The reversal of 117801012 is 210108711.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 117801012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117801017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33523 + ... + 36869.

It is an arithmetic number, because the mean of its divisors is an integer number (6562080).

Almost surely, 2^117801012 is an apocalyptic number.

117801012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

117801012 is an abundant number, since it is smaller than the sum of its proper divisors (197178828).

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

117801012 is a wasteful number, since it uses less digits than its factorization.

117801012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3780 (or 3778 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 21.

The square root of 117801012 is about 10853.6174614734. The cubic root of 117801012 is about 490.2109490162.

Adding to 117801012 its reverse (210108711), we get a palindrome (327909723).

The spelling of 117801012 in words is "one hundred seventeen million, eight hundred one thousand, twelve".