217056133130 has 16 divisors (see below), whose sum is σ = 390712233960. Its totient is φ = 86819965632.

The previous prime is 217056133081. The next prime is 217056133181. The reversal of 217056133130 is 31331650712.

It can be written as a sum of positive squares in 4 ways, for example, as 201361305289 + 15694827841 = 448733^2 + 125279^2 .

It is a super-2 number, since 2×217056133130² (a number of 23 digits) contains 22 as substring.

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, 78776 + ... + 663564.

Almost surely, 2^217056133130 is an apocalyptic number.

217056133130 is a deficient number, since it is larger than the sum of its proper divisors (173656100830).

217056133130 is a wasteful number, since it uses less digits than its factorization.

217056133130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621913.

The product of its (nonzero) digits is 11340, while the sum is 32.

Adding to 217056133130 its reverse (31331650712), we get a palindrome (248387783842).

The spelling of 217056133130 in words is "two hundred seventeen billion, fifty-six million, one hundred thirty-three thousand, one hundred thirty".