121103253 has 6 divisors (see below), whose sum is σ = 174926934. Its totient is φ = 80735496.

The previous prime is 121103249. The next prime is 121103261. The reversal of 121103253 is 352301121.

It can be written as a sum of positive squares in only one way, i.e., 103184964 + 17918289 = 10158^2 + 4233^2 .

It is not a de Polignac number, because 121103253 - 2² = 121103249 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121103243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6727950 + ... + 6727967.

It is an arithmetic number, because the mean of its divisors is an integer number (29154489).

Almost surely, 2^121103253 is an apocalyptic number.

It is an amenable number.

121103253 is a deficient number, since it is larger than the sum of its proper divisors (53823681).

121103253 is a wasteful number, since it uses less digits than its factorization.

121103253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13455923 (or 13455920 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 121103253 is about 11004.6923173708. The cubic root of 121103253 is about 494.7493925813.

Adding to 121103253 its reverse (352301121), we get a palindrome (473404374).

The spelling of 121103253 in words is "one hundred twenty-one million, one hundred three thousand, two hundred fifty-three".