667212444122 has 8 divisors (see below), whose sum is σ = 1143792761376. Its totient is φ = 285948190332.

The previous prime is 667212444121. The next prime is 667212444179. The reversal of 667212444122 is 221444212766.

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

It is a self number, because there is not a number n which added to its sum of digits gives 667212444122.

It is not an unprimeable number, because it can be changed into a prime (667212444121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23829015848 + ... + 23829015875.

It is an arithmetic number, because the mean of its divisors is an integer number (142974095172).

Almost surely, 2^667212444122 is an apocalyptic number.

667212444122 is a deficient number, since it is larger than the sum of its proper divisors (476580317254).

667212444122 is a wasteful number, since it uses less digits than its factorization.

667212444122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47658031732.

The product of its digits is 258048, while the sum is 41.

Adding to 667212444122 its reverse (221444212766), we get a palindrome (888656656888).

The spelling of 667212444122 in words is "six hundred sixty-seven billion, two hundred twelve million, four hundred forty-four thousand, one hundred twenty-two".