121712 has 10 divisors (see below), whose sum is σ = 235848. Its totient is φ = 60848.

The previous prime is 121711. The next prime is 121721. The reversal of 121712 is 217121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3788 + ... + 3819.

2¹²¹⁷¹² is an apocalyptic number.

It is an amenable number.

121712 is a deficient number, since it is larger than the sum of its proper divisors (114136).

121712 is an equidigital number, since it uses as much as digits as its factorization.

121712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7615 (or 7609 counting only the distinct ones).

The product of its digits is 28, while the sum is 14.

The square root of 121712 is about 348.8724695358. The cubic root of 121712 is about 49.5576989323.

Adding to 121712 its reverse (217121), we get a palindrome (338833).

It can be divided in two parts, 12171 and 2, that multiplied together give a palindrome (24342).

The spelling of 121712 in words is "one hundred twenty-one thousand, seven hundred twelve", and thus it is an iban number.