212531402040116 has 12 divisors (see below), whose sum is σ = 371930093862180. Its totient is φ = 106265660936640.

The previous prime is 212531402040049. The next prime is 212531402040277. The reversal of 212531402040116 is 611040204135212.

It can be written as a sum of positive squares in 2 ways, for example, as 61736440420516 + 150794961619600 = 7857254^2 + 12279860^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4129256 + ... + 21026496.

It is an arithmetic number, because the mean of its divisors is an integer number (30994174488515).

Almost surely, 2^{212531402040116} is an apocalyptic number.

It is an amenable number.

212531402040116 is a deficient number, since it is larger than the sum of its proper divisors (159398691822064).

212531402040116 is a wasteful number, since it uses less digits than its factorization.

212531402040116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20041714 (or 20041712 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

Adding to 212531402040116 its reverse (611040204135212), we get a palindrome (823571606175328).

The spelling of 212531402040116 in words is "two hundred twelve trillion, five hundred thirty-one billion, four hundred two million, forty thousand, one hundred sixteen".