10021121212 has 12 divisors (see below), whose sum is σ = 17538499216. Its totient is φ = 5010121440.

The previous prime is 10021121179. The next prime is 10021121213. The reversal of 10021121212 is 21212112001.

10021121212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 10021121192 and 10021121201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021121213) by changing a digit.

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, 55464 + ... + 152047.

Almost surely, 2^10021121212 is an apocalyptic number.

It is an amenable number.

10021121212 is a deficient number, since it is larger than the sum of its proper divisors (7517378004).

10021121212 is a wasteful number, since it uses less digits than its factorization.

10021121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219588 (or 219586 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10021121212 its reverse (21212112001), we get a palindrome (31233233213).

The spelling of 10021121212 in words is "ten billion, twenty-one million, one hundred twenty-one thousand, two hundred twelve".