212131302650 has 24 divisors (see below), whose sum is σ = 405228124380. Its totient is φ = 82559208960.

The previous prime is 212131302547. The next prime is 212131302667. The reversal of 212131302650 is 56203131212.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 92848793521 + 119282509129 = 304711^2 + 345373^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 57330935 + ... + 57334634.

Almost surely, 2^212131302650 is an apocalyptic number.

212131302650 is a deficient number, since it is larger than the sum of its proper divisors (193096821730).

212131302650 is a wasteful number, since it uses less digits than its factorization.

212131302650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114665618 (or 114665613 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 212131302650 its reverse (56203131212), we get a palindrome (268334433862).

The spelling of 212131302650 in words is "two hundred twelve billion, one hundred thirty-one million, three hundred two thousand, six hundred fifty".