121543331210 has 32 divisors (see below), whose sum is σ = 250335919872. Its totient is φ = 41621345280.

The previous prime is 121543331209. The next prime is 121543331269. The reversal of 121543331210 is 12133345121.

It is a self number, because there is not a number n which added to its sum of digits gives 121543331210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 997271 + ... + 1112490.

It is an arithmetic number, because the mean of its divisors is an integer number (7822997496).

Almost surely, 2^121543331210 is an apocalyptic number.

121543331210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121543331210 is an abundant number, since it is smaller than the sum of its proper divisors (128792588662).

121543331210 is a wasteful number, since it uses less digits than its factorization.

121543331210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110598.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 121543331210 its reverse (12133345121), we get a palindrome (133676676331).

The spelling of 121543331210 in words is "one hundred twenty-one billion, five hundred forty-three million, three hundred thirty-one thousand, two hundred ten".