121201245 has 64 divisors (see below), whose sum is σ = 248935680. Its totient is φ = 55296000.

The previous prime is 121201231. The next prime is 121201253. The reversal of 121201245 is 542102121.

It is not a de Polignac number, because 121201245 - 2⁴ = 121201229 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 63 ways as a sum of consecutive naturals, for example, 22845 + ... + 27645.

It is an arithmetic number, because the mean of its divisors is an integer number (3889620).

Almost surely, 2^121201245 is an apocalyptic number.

121201245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121201245 is an abundant number, since it is smaller than the sum of its proper divisors (127734435).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121201245 is a wasteful number, since it uses less digits than its factorization.

121201245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4843 (or 4837 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 121201245 is about 11009.1436996707. The cubic root of 121201245 is about 494.8828005361.

Adding to 121201245 its reverse (542102121), we get a palindrome (663303366).

The spelling of 121201245 in words is "one hundred twenty-one million, two hundred one thousand, two hundred forty-five".