121172 has 6 divisors (see below), whose sum is σ = 212058. Its totient is φ = 60584.

The previous prime is 121171. The next prime is 121181. The reversal of 121172 is 271121.

It can be written as a sum of positive squares in only one way, i.e., 99856 + 21316 = 316^2 + 146^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15143 + ... + 15150.

It is an arithmetic number, because the mean of its divisors is an integer number (35343).

2¹²¹¹⁷² is an apocalyptic number.

It is an amenable number.

121172 is a deficient number, since it is larger than the sum of its proper divisors (90886).

121172 is a wasteful number, since it uses less digits than its factorization.

121172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30297 (or 30295 counting only the distinct ones).

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

The square root of 121172 is about 348.0976874385. The cubic root of 121172 is about 49.4842993432.

Adding to 121172 its reverse (271121), we get a palindrome (392293).

The spelling of 121172 in words is "one hundred twenty-one thousand, one hundred seventy-two", and thus it is an iban number.