212131010 has 64 divisors (see below), whose sum is σ = 494726400. Its totient is φ = 63597312.

The previous prime is 212131009. The next prime is 212131013. The reversal of 212131010 is 10131212.

It is a junction number, because it is equal to n+sod(n) for n = 212130982 and 212131000.

It is not an unprimeable number, because it can be changed into a prime (212131013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11156 + ... + 23424.

It is an arithmetic number, because the mean of its divisors is an integer number (7730100).

Almost surely, 2^212131010 is an apocalyptic number.

212131010 is an abundant number, since it is smaller than the sum of its proper divisors (282595390).

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

212131010 is a wasteful number, since it uses less digits than its factorization.

212131010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12315.

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

The square root of 212131010 is about 14564.7179855979. The cubic root of 212131010 is about 596.3959971350.

Adding to 212131010 its reverse (10131212), we get a palindrome (222262222).

The spelling of 212131010 in words is "two hundred twelve million, one hundred thirty-one thousand, ten".