121298 has 4 divisors (see below), whose sum is σ = 181950. Its totient is φ = 60648.

The previous prime is 121291. The next prime is 121309. The reversal of 121298 is 892121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 892121 = 43 ⋅20747.

It can be written as a sum of positive squares in only one way, i.e., 80089 + 41209 = 283^2 + 203^2 .

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (121291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30323 + ... + 30326.

2¹²¹²⁹⁸ is an apocalyptic number.

121298 is a deficient number, since it is larger than the sum of its proper divisors (60652).

121298 is an equidigital number, since it uses as much as digits as its factorization.

121298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60651.

The product of its digits is 288, while the sum is 23.

The square root of 121298 is about 348.2786240928. The cubic root of 121298 is about 49.5014453885.

It can be divided in two parts, 12 and 1298, that multiplied together give a triangular number (15576 = T₁₇₆).

The spelling of 121298 in words is "one hundred twenty-one thousand, two hundred ninety-eight".