117205212 has 12 divisors (see below), whose sum is σ = 273478856. Its totient is φ = 39068400.

The previous prime is 117205201. The next prime is 117205241. The reversal of 117205212 is 212502711.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4883539 + ... + 4883562.

Almost surely, 2^117205212 is an apocalyptic number.

117205212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

117205212 is an abundant number, since it is smaller than the sum of its proper divisors (156273644).

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

117205212 is a wasteful number, since it uses less digits than its factorization.

117205212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9767108 (or 9767106 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 117205212 is about 10826.1355986335. The cubic root of 117205212 is about 489.3831081746.

Adding to 117205212 its reverse (212502711), we get a palindrome (329707923).

The spelling of 117205212 in words is "one hundred seventeen million, two hundred five thousand, two hundred twelve".