121330245 has 16 divisors (see below), whose sum is σ = 194939712. Its totient is φ = 64439040.

The previous prime is 121330217. The next prime is 121330277. The reversal of 121330245 is 542033121.

It is not a de Polignac number, because 121330245 - 2⁵ = 121330213 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13167 + ... + 20396.

It is an arithmetic number, because the mean of its divisors is an integer number (12183732).

Almost surely, 2^121330245 is an apocalyptic number.

121330245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121330245 is a deficient number, since it is larger than the sum of its proper divisors (73609467).

121330245 is a wasteful number, since it uses less digits than its factorization.

121330245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33812.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 121330245 is about 11015.0009078529. Note that the first 3 decimals coincide. The cubic root of 121330245 is about 495.0583137096.

Adding to 121330245 its reverse (542033121), we get a palindrome (663363366).

It can be divided in two parts, 1 and 21330245, that added together give a triangular number (21330246 = T₆₅₃₁).

The spelling of 121330245 in words is "one hundred twenty-one million, three hundred thirty thousand, two hundred forty-five".