212110051617 has 12 divisors (see below), whose sum is σ = 309244562640. Its totient is φ = 140085142488.

The previous prime is 212110051597. The next prime is 212110051627. The reversal of 212110051617 is 716150011212.

212110051617 is a `hidden beast` number, since 2 + 121 + 10 + 0 + 516 + 17 = 666.

It is not a de Polignac number, because 212110051617 - 2⁶ = 212110051553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212110051627) by changing a digit.

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, 110128867 + ... + 110130792.

It is an arithmetic number, because the mean of its divisors is an integer number (25770380220).

Almost surely, 2^212110051617 is an apocalyptic number.

It is an amenable number.

212110051617 is a deficient number, since it is larger than the sum of its proper divisors (97134511023).

212110051617 is a wasteful number, since it uses less digits than its factorization.

212110051617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220259772 (or 220259769 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 27.

Adding to 212110051617 its reverse (716150011212), we get a palindrome (928260062829).

The spelling of 212110051617 in words is "two hundred twelve billion, one hundred ten million, fifty-one thousand, six hundred seventeen".