212450115105 has 48 divisors (see below), whose sum is σ = 380307882240. Its totient is φ = 109649827584.

The previous prime is 212450115067. The next prime is 212450115107. The reversal of 212450115105 is 501511054212.

It is a happy number.

212450115105 is a `hidden beast` number, since 2 + 1 + 2 + 4 + 501 + 151 + 0 + 5 = 666.

212450115105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212450115105 - 2¹⁰ = 212450114081 is a prime.

It is a super-2 number, since 2×212450115105² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212450115107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 376087 + ... + 752556.

It is an arithmetic number, because the mean of its divisors is an integer number (7923080880).

Almost surely, 2^212450115105 is an apocalyptic number.

It is an amenable number.

212450115105 is a deficient number, since it is larger than the sum of its proper divisors (167857767135).

212450115105 is a wasteful number, since it uses less digits than its factorization.

212450115105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128790 (or 1128787 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

Adding to 212450115105 its reverse (501511054212), we get a palindrome (713961169317).

The spelling of 212450115105 in words is "two hundred twelve billion, four hundred fifty million, one hundred fifteen thousand, one hundred five".