667222155012 has 48 divisors (see below), whose sum is σ = 1793269022720. Its totient is φ = 189133836192.

The previous prime is 667222155007. The next prime is 667222155031. The reversal of 667222155012 is 210551222766.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31261462 + ... + 31282797.

Almost surely, 2^667222155012 is an apocalyptic number.

It is an amenable number.

667222155012 is an abundant number, since it is smaller than the sum of its proper divisors (1126046867708).

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

667222155012 is a wasteful number, since it uses less digits than its factorization.

667222155012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62544400 (or 62544398 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

Adding to 667222155012 its reverse (210551222766), we get a palindrome (877773377778).

The spelling of 667222155012 in words is "six hundred sixty-seven billion, two hundred twenty-two million, one hundred fifty-five thousand, twelve".