10212121212 has 36 divisors (see below), whose sum is σ = 24489735480. Its totient is φ = 3312033984.

The previous prime is 10212121201. The next prime is 10212121217. The reversal of 10212121212 is 21212121201.

10212121212 is a modest number, since divided by 121212 gives 10212 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 10212121191 and 10212121200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212121217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 294387 + ... + 327242.

It is an arithmetic number, because the mean of its divisors is an integer number (680270430).

Almost surely, 2^10212121212 is an apocalyptic number.

10212121212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10212121212 is an abundant number, since it is smaller than the sum of its proper divisors (14277614268).

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

10212121212 is a wasteful number, since it uses less digits than its factorization.

10212121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621710 (or 621671 counting only the distinct ones).

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

Adding to 10212121212 its reverse (21212121201), we get a palindrome (31424242413).

The spelling of 10212121212 in words is "ten billion, two hundred twelve million, one hundred twenty-one thousand, two hundred twelve".