212394690833 has 8 divisors (see below), whose sum is σ = 234311591976. Its totient is φ = 191274768000.

The previous prime is 212394690817. The next prime is 212394690847. The reversal of 212394690833 is 338096493212.

212394690833 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 42887096464 + 169507594369 = 207092^2 + 411713^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212394690833 - 2⁴ = 212394690817 is a prime.

It is a super-2 number, since 2×212394690833² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212394690863) 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 7 ways as a sum of consecutive naturals, for example, 199244018 + ... + 199245083.

It is an arithmetic number, because the mean of its divisors is an integer number (29288948997).

Almost surely, 2^212394690833 is an apocalyptic number.

It is an amenable number.

212394690833 is a deficient number, since it is larger than the sum of its proper divisors (21916901143).

212394690833 is a wasteful number, since it uses less digits than its factorization.

212394690833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398489155.

The product of its (nonzero) digits is 1679616, while the sum is 50.

The spelling of 212394690833 in words is "two hundred twelve billion, three hundred ninety-four million, six hundred ninety thousand, eight hundred thirty-three".