121012321310210 has 96 divisors (see below), whose sum is σ = 245007057113280. Its totient is φ = 42978546737280.

The previous prime is 121012321310171. The next prime is 121012321310219. The reversal of 121012321310210 is 12013123210121.

It is not an unprimeable number, because it can be changed into a prime (121012321310219) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1009478156 + ... + 1009598024.

It is an arithmetic number, because the mean of its divisors is an integer number (2552156844930).

Almost surely, 2^{121012321310210} is an apocalyptic number.

121012321310210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121012321310210 is an abundant number, since it is smaller than the sum of its proper divisors (123994735803070).

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

121012321310210 is a wasteful number, since it uses less digits than its factorization.

121012321310210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139344 (or 139333 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 121012321310210 its reverse (12013123210121), we get a palindrome (133025444520331).

The spelling of 121012321310210 in words is "one hundred twenty-one trillion, twelve billion, three hundred twenty-one million, three hundred ten thousand, two hundred ten".