212246321634 has 144 divisors (see below), whose sum is σ = 481729405248. Its totient is φ = 67503691008.

The previous prime is 212246321587. The next prime is 212246321641. The reversal of 212246321634 is 436123642212.

212246321634 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 4 + 632 + 16 + 3 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 421960627 + ... + 421961129.

It is an arithmetic number, because the mean of its divisors is an integer number (3345343092).

Almost surely, 2^212246321634 is an apocalyptic number.

212246321634 is an abundant number, since it is smaller than the sum of its proper divisors (269483083614).

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

212246321634 is a wasteful number, since it uses less digits than its factorization.

212246321634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793 (or 717 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

Adding to 212246321634 its reverse (436123642212), we get a palindrome (648369963846).

The spelling of 212246321634 in words is "two hundred twelve billion, two hundred forty-six million, three hundred twenty-one thousand, six hundred thirty-four".