212573087249 has 8 divisors (see below), whose sum is σ = 216269569320. Its totient is φ = 208883433600.

The previous prime is 212573087213. The next prime is 212573087263. The reversal of 212573087249 is 942780375212.

It can be written as a sum of positive squares in 4 ways, for example, as 657409600 + 211915677649 = 25640^2 + 460343^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212573087249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212573087197 and 212573087206.

It is not an unprimeable number, because it can be changed into a prime (212573087149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1644284 + ... + 1768845.

It is an arithmetic number, because the mean of its divisors is an integer number (27033696165).

Almost surely, 2^212573087249 is an apocalyptic number.

It is an amenable number.

212573087249 is a deficient number, since it is larger than the sum of its proper divisors (3696482071).

212573087249 is a wasteful number, since it uses less digits than its factorization.

212573087249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3414211.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 212573087249 in words is "two hundred twelve billion, five hundred seventy-three million, eighty-seven thousand, two hundred forty-nine".