121202110212 has 12 divisors (see below), whose sum is σ = 282804923856. Its totient is φ = 40400703400.

The previous prime is 121202110199. The next prime is 121202110229. The reversal of 121202110212 is 212011202121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 121202110191 and 121202110200.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5050087914 + ... + 5050087937.

It is an arithmetic number, because the mean of its divisors is an integer number (23567076988).

Almost surely, 2^121202110212 is an apocalyptic number.

121202110212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121202110212 is an abundant number, since it is smaller than the sum of its proper divisors (161602813644).

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

121202110212 is a wasteful number, since it uses less digits than its factorization.

121202110212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10100175858 (or 10100175856 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121202110212 its reverse (212011202121), we get a palindrome (333213312333).

The spelling of 121202110212 in words is "one hundred twenty-one billion, two hundred two million, one hundred ten thousand, two hundred twelve".