117211212 has 30 divisors (see below), whose sum is σ = 306414108. Its totient is φ = 39070296.

The previous prime is 117211177. The next prime is 117211231. The reversal of 117211212 is 212112711.

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

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 180558 + ... + 181205.

Almost surely, 2^117211212 is an apocalyptic number.

117211212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

117211212 is an abundant number, since it is smaller than the sum of its proper divisors (189202896).

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

117211212 is a wasteful number, since it uses less digits than its factorization.

117211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361779 (or 361768 counting only the distinct ones).

The product of its digits is 56, while the sum is 18.

The square root of 117211212 is about 10826.4127022759. The cubic root of 117211212 is about 489.3914589083.

Adding to 117211212 its reverse (212112711), we get a palindrome (329323923).

The spelling of 117211212 in words is "one hundred seventeen million, two hundred eleven thousand, two hundred twelve".