10020021212 has 48 divisors (see below), whose sum is σ = 18374882400. Its totient is φ = 4777344000.

The previous prime is 10020021211. The next prime is 10020021233. The reversal of 10020021212 is 21212002001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10020021193 and 10020021202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020021211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1108712 + ... + 1117712.

It is an arithmetic number, because the mean of its divisors is an integer number (382810050).

Almost surely, 2^10020021212 is an apocalyptic number.

It is an amenable number.

10020021212 is a deficient number, since it is larger than the sum of its proper divisors (8354861188).

10020021212 is a wasteful number, since it uses less digits than its factorization.

10020021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9206 (or 9204 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10020021212 its reverse (21212002001), we get a palindrome (31232023213).

The spelling of 10020021212 in words is "ten billion, twenty million, twenty-one thousand, two hundred twelve".