121003243502 has 16 divisors (see below), whose sum is σ = 192343258800. Its totient is φ = 56990592960.

The previous prime is 121003243499. The next prime is 121003243507. The reversal of 121003243502 is 205342300121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121003243507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25439852 + ... + 25444607.

It is an arithmetic number, because the mean of its divisors is an integer number (12021453675).

Almost surely, 2^121003243502 is an apocalyptic number.

121003243502 is a deficient number, since it is larger than the sum of its proper divisors (71340015298).

121003243502 is a wasteful number, since it uses less digits than its factorization.

121003243502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50884531.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 121003243502 its reverse (205342300121), we get a palindrome (326345543623).

The spelling of 121003243502 in words is "one hundred twenty-one billion, three million, two hundred forty-three thousand, five hundred two".