10131212 has 36 divisors (see below), whose sum is σ = 21951216. Its totient is φ = 4006080.

The previous prime is 10131211. The next prime is 10131227. The reversal of 10131212 is 21213101.

It is a junction number, because it is equal to n+sod(n) for n = 10131193 and 10131202.

It is not an unprimeable number, because it can be changed into a prime (10131211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3662 + ... + 5802.

It is an arithmetic number, because the mean of its divisors is an integer number (609756).

Almost surely, 2^10131212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10131212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10975608).

10131212 is an abundant number, since it is smaller than the sum of its proper divisors (11820004).

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

10131212 is a wasteful number, since it uses less digits than its factorization.

10131212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178 (or 2163 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 10131212 is about 3182.9564872929. The cubic root of 10131212 is about 216.3816697323.

Adding to 10131212 its reverse (21213101), we get a palindrome (31344313).

It can be divided in two parts, 101 and 31212, that added together give a palindrome (31313).

The spelling of 10131212 in words is "ten million, one hundred thirty-one thousand, two hundred twelve".