212240010005 has 8 divisors (see below), whose sum is σ = 254695660632. Its totient is φ = 169786908928.

The previous prime is 212240009999. The next prime is 212240010049. The reversal of 212240010005 is 500010042212.

It can be written as a sum of positive squares in 4 ways, for example, as 26645338756 + 185594671249 = 163234^2 + 430807^2 .

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-212240010005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449192 + ... + 791361.

It is an arithmetic number, because the mean of its divisors is an integer number (31836957579).

Almost surely, 2^212240010005 is an apocalyptic number.

It is an amenable number.

212240010005 is a deficient number, since it is larger than the sum of its proper divisors (42455650627).

212240010005 is a wasteful number, since it uses less digits than its factorization.

212240010005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274775.

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 212240010005 its reverse (500010042212), we get a palindrome (712250052217).

The spelling of 212240010005 in words is "two hundred twelve billion, two hundred forty million, ten thousand, five".