667210212112 has 20 divisors (see below), whose sum is σ = 1368762126876. Its totient is φ = 313981276160.

The previous prime is 667210212091. The next prime is 667210212133. The reversal of 667210212112 is 211212012766.

It is an interprime number because it is at equal distance from previous prime (667210212091) and next prime (667210212133).

It can be written as a sum of positive squares in 2 ways, for example, as 299532911616 + 367677300496 = 547296^2 + 606364^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1226489089 + ... + 1226489632.

Almost surely, 2^667210212112 is an apocalyptic number.

It is an amenable number.

667210212112 is an abundant number, since it is smaller than the sum of its proper divisors (701551914764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667210212112 is a wasteful number, since it uses less digits than its factorization.

667210212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452978746 (or 2452978740 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

Adding to 667210212112 its reverse (211212012766), we get a palindrome (878422224878).

The spelling of 667210212112 in words is "six hundred sixty-seven billion, two hundred ten million, two hundred twelve thousand, one hundred twelve".