121337 has 4 divisors (see below), whose sum is σ = 123216. Its totient is φ = 119460.

The previous prime is 121333. The next prime is 121343. The reversal of 121337 is 733121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 733121 = 41 ⋅17881.

It is a cyclic number.

It is not a de Polignac number, because 121337 - 2² = 121333 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 121337.

It is not an unprimeable number, because it can be changed into a prime (121333) 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, 839 + ... + 972.

It is an arithmetic number, because the mean of its divisors is an integer number (30804).

2¹²¹³³⁷ is an apocalyptic number.

It is an amenable number.

121337 is a deficient number, since it is larger than the sum of its proper divisors (1879).

121337 is an equidigital number, since it uses as much as digits as its factorization.

121337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878.

The product of its digits is 126, while the sum is 17.

The square root of 121337 is about 348.3346092481. The cubic root of 121337 is about 49.5067500913.

Adding to 121337 its reverse (733121), we get a palindrome (854458).

The spelling of 121337 in words is "one hundred twenty-one thousand, three hundred thirty-seven".