212055416631 has 24 divisors (see below), whose sum is σ = 314590882320. Its totient is φ = 137569211136.

The previous prime is 212055416611. The next prime is 212055416687. The reversal of 212055416631 is 136614550212.

212055416631 is a `hidden beast` number, since 2 + 1 + 2 + 0 + 5 + 5 + 4 + 16 + 631 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-212055416631 is a prime.

It is a super-2 number, since 2×212055416631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212055416611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 914386 + ... + 1122591.

It is an arithmetic number, because the mean of its divisors is an integer number (13107953430).

Almost surely, 2^212055416631 is an apocalyptic number.

212055416631 is a deficient number, since it is larger than the sum of its proper divisors (102535465689).

212055416631 is a wasteful number, since it uses less digits than its factorization.

212055416631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2037295 (or 2037292 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 212055416631 its reverse (136614550212), we get a palindrome (348669966843).

The spelling of 212055416631 in words is "two hundred twelve billion, fifty-five million, four hundred sixteen thousand, six hundred thirty-one".