117212810205 has 32 divisors (see below), whose sum is σ = 188821721088. Its totient is φ = 62087054400.

The previous prime is 117212810177. The next prime is 117212810269. The reversal of 117212810205 is 502018212711.

It is not a de Polignac number, because 117212810205 - 2⁸ = 117212809949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3064650 + ... + 3102660.

It is an arithmetic number, because the mean of its divisors is an integer number (5900678784).

Almost surely, 2^117212810205 is an apocalyptic number.

117212810205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117212810205 is a deficient number, since it is larger than the sum of its proper divisors (71608910883).

117212810205 is a wasteful number, since it uses less digits than its factorization.

117212810205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39417.

The product of its (nonzero) digits is 2240, while the sum is 30.

The spelling of 117212810205 in words is "one hundred seventeen billion, two hundred twelve million, eight hundred ten thousand, two hundred five".