212131010244 has 48 divisors (see below), whose sum is σ = 508409459712. Its totient is φ = 68803258272.

The previous prime is 212131010243. The next prime is 212131010251. The reversal of 212131010244 is 442010131212.

It is a self number, because there is not a number n which added to its sum of digits gives 212131010244.

It is not an unprimeable number, because it can be changed into a prime (212131010243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 645864 + ... + 917279.

It is an arithmetic number, because the mean of its divisors is an integer number (10591863744).

Almost surely, 2^212131010244 is an apocalyptic number.

It is an amenable number.

212131010244 is an abundant number, since it is smaller than the sum of its proper divisors (296278449468).

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

212131010244 is a wasteful number, since it uses less digits than its factorization.

212131010244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563456 (or 1563454 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 212131010244 its reverse (442010131212), we get a palindrome (654141141456).

The spelling of 212131010244 in words is "two hundred twelve billion, one hundred thirty-one million, ten thousand, two hundred forty-four".