121343530210 has 128 divisors (see below), whose sum is σ = 268128299520. Its totient is φ = 38610763776.

The previous prime is 121343530207. The next prime is 121343530279. The reversal of 121343530210 is 12035343121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 81274224 + ... + 81275716.

It is an arithmetic number, because the mean of its divisors is an integer number (2094752340).

Almost surely, 2^121343530210 is an apocalyptic number.

121343530210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121343530210 is an abundant number, since it is smaller than the sum of its proper divisors (146784769310).

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

121343530210 is a wasteful number, since it uses less digits than its factorization.

121343530210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2732.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 121343530210 its reverse (12035343121), we get a palindrome (133378873331).

The spelling of 121343530210 in words is "one hundred twenty-one billion, three hundred forty-three million, five hundred thirty thousand, two hundred ten".