212806001285 has 8 divisors (see below), whose sum is σ = 255370034976. Its totient is φ = 170242912080.

The previous prime is 212806001203. The next prime is 212806001293. The reversal of 212806001285 is 582100608212.

It is a happy number.

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

It is not a de Polignac number, because 212806001285 - 2²² = 212801806981 is a prime.

It is a super-2 number, since 2×212806001285² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430850 + ... + 781820.

It is an arithmetic number, because the mean of its divisors is an integer number (31921254372).

Almost surely, 2^212806001285 is an apocalyptic number.

It is an amenable number.

212806001285 is a deficient number, since it is larger than the sum of its proper divisors (42564033691).

212806001285 is a wasteful number, since it uses less digits than its factorization.

212806001285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472243.

The product of its (nonzero) digits is 15360, while the sum is 35.

Adding to 212806001285 its reverse (582100608212), we get a palindrome (794906609497).

The spelling of 212806001285 in words is "two hundred twelve billion, eight hundred six million, one thousand, two hundred eighty-five".