121153 has 4 divisors (see below), whose sum is σ = 122500. Its totient is φ = 119808.

The previous prime is 121151. The next prime is 121157. The reversal of 121153 is 351121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51984 + 69169 = 228^2 + 263^2 .

It is a cyclic number.

It is not a de Polignac number, because 121153 - 2¹ = 121151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121151) 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, 528 + ... + 721.

It is an arithmetic number, because the mean of its divisors is an integer number (30625).

2¹²¹¹⁵³ is an apocalyptic number.

It is an amenable number.

121153 is a deficient number, since it is larger than the sum of its proper divisors (1347).

121153 is an equidigital number, since it uses as much as digits as its factorization.

121153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346.

The product of its digits is 30, while the sum is 13.

The square root of 121153 is about 348.0703951789. The cubic root of 121153 is about 49.4817127973.

Adding to 121153 its reverse (351121), we get a palindrome (472274).

The spelling of 121153 in words is "one hundred twenty-one thousand, one hundred fifty-three".