10021212 has 24 divisors (see below), whose sum is σ = 25981200. Its totient is φ = 3340368.

The previous prime is 10021163. The next prime is 10021213. The reversal of 10021212 is 21212001.

10021212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 10021194 and 10021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46287 + ... + 46502.

It is an arithmetic number, because the mean of its divisors is an integer number (1082550).

Almost surely, 2^10021212 is an apocalyptic number.

10021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10021212 is an abundant number, since it is smaller than the sum of its proper divisors (15959988).

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

10021212 is a wasteful number, since it uses less digits than its factorization.

10021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92802 (or 92794 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 10021212 is about 3165.6297951593. The cubic root of 10021212 is about 215.5956943159.

Adding to 10021212 its reverse (21212001), we get a palindrome (31233213).

It can be divided in two parts, 100 and 21212, that added together give a palindrome (21312).

The spelling of 10021212 in words is "ten million, twenty-one thousand, two hundred twelve".