212330511445 has 64 divisors (see below), whose sum is σ = 296455723200. Its totient is φ = 144576626688.

The previous prime is 212330511409. The next prime is 212330511467. The reversal of 212330511445 is 544115033212.

It can be written as a sum of positive squares in 32 ways, for example, as 82816177284 + 129514334161 = 287778^2 + 359881^2 .

It is not a de Polignac number, because 212330511445 - 2⁹ = 212330510933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 46674031 + ... + 46678579.

It is an arithmetic number, because the mean of its divisors is an integer number (4632120675).

Almost surely, 2^212330511445 is an apocalyptic number.

It is an amenable number.

212330511445 is a deficient number, since it is larger than the sum of its proper divisors (84125211755).

212330511445 is a wasteful number, since it uses less digits than its factorization.

212330511445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5434.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 212330511445 its reverse (544115033212), we get a palindrome (756445544657).

The spelling of 212330511445 in words is "two hundred twelve billion, three hundred thirty million, five hundred eleven thousand, four hundred forty-five".