121320543010 has 96 divisors (see below), whose sum is σ = 236248721280. Its totient is φ = 44701284864.

The previous prime is 121320543007. The next prime is 121320543017. The reversal of 121320543010 is 10345023121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121320543017) 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 47 ways as a sum of consecutive naturals, for example, 259786797 + ... + 259787263.

It is an arithmetic number, because the mean of its divisors is an integer number (2460924180).

Almost surely, 2^121320543010 is an apocalyptic number.

121320543010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121320543010 is a deficient number, since it is larger than the sum of its proper divisors (114928178270).

121320543010 is a wasteful number, since it uses less digits than its factorization.

121320543010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048 (or 989 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 121320543010 its reverse (10345023121), we get a palindrome (131665566131).

The spelling of 121320543010 in words is "one hundred twenty-one billion, three hundred twenty million, five hundred forty-three thousand, ten".