121403244 has 24 divisors (see below), whose sum is σ = 283550400. Its totient is φ = 40428304.

The previous prime is 121403221. The next prime is 121403267. The reversal of 121403244 is 442304121.

It is an interprime number because it is at equal distance from previous prime (121403221) and next prime (121403267).

It is a self number, because there is not a number n which added to its sum of digits gives 121403244.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9607 + ... + 18305.

It is an arithmetic number, because the mean of its divisors is an integer number (11814600).

Almost surely, 2^121403244 is an apocalyptic number.

It is an amenable number.

121403244 is an abundant number, since it is smaller than the sum of its proper divisors (162147156).

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

121403244 is a wasteful number, since it uses less digits than its factorization.

121403244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9869 (or 9867 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 121403244 is about 11018.3140271096. The cubic root of 121403244 is about 495.1575786444.

Adding to 121403244 its reverse (442304121), we get a palindrome (563707365).

The spelling of 121403244 in words is "one hundred twenty-one million, four hundred three thousand, two hundred forty-four".