121712132 has 12 divisors (see below), whose sum is σ = 213075996. Its totient is φ = 60833280.

The previous prime is 121712131. The next prime is 121712137. The reversal of 121712132 is 231217121.

It can be written as a sum of positive squares in 2 ways, for example, as 14258176 + 107453956 = 3776^2 + 10366^2 .

It is not an unprimeable number, because it can be changed into a prime (121712131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13532 + ... + 20652.

It is an arithmetic number, because the mean of its divisors is an integer number (17756333).

Almost surely, 2^121712132 is an apocalyptic number.

It is an amenable number.

121712132 is a deficient number, since it is larger than the sum of its proper divisors (91363864).

121712132 is a wasteful number, since it uses less digits than its factorization.

121712132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11398 (or 11396 counting only the distinct ones).

The product of its digits is 168, while the sum is 20.

The square root of 121712132 is about 11032.3221490310. The cubic root of 121712132 is about 495.5771684786.

Adding to 121712132 its reverse (231217121), we get a palindrome (352929253).

The spelling of 121712132 in words is "one hundred twenty-one million, seven hundred twelve thousand, one hundred thirty-two".