217227496712 has 36 divisors (see below), whose sum is σ = 409326028605. Its totient is φ = 108076555776.

The previous prime is 217227496711. The next prime is 217227496741. The reversal of 217227496712 is 217694722712.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 214511627716 + 2715868996 = 463154^2 + 52114^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=329566.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (217227496711) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 483802664 + ... + 483803112.

Almost surely, 2^217227496712 is an apocalyptic number.

It is an amenable number.

217227496712 is a deficient number, since it is larger than the sum of its proper divisors (192098531893).

217227496712 is an frugal number, since it uses more digits than its factorization.

217227496712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638 (or 818 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 50.

Multiplying 217227496712 by its sum of digits (50), we get a square (10861374835600 = 3295660²).

The spelling of 217227496712 in words is "two hundred seventeen billion, two hundred twenty-seven million, four hundred ninety-six thousand, seven hundred twelve".