646271056222212 has 24 divisors (see below), whose sum is σ = 1507972076459296. Its totient is φ = 215422788463488.

The previous prime is 646271056222177. The next prime is 646271056222223. The reversal of 646271056222212 is 212222650172646.

It is a super-2 number, since 2×646271056222212² (a number of 30 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, 109112578 + ... + 114882969.

Almost surely, 2^{646271056222212} is an apocalyptic number.

It is an amenable number.

646271056222212 is an abundant number, since it is smaller than the sum of its proper divisors (861701020237084).

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

646271056222212 is a wasteful number, since it uses less digits than its factorization.

646271056222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224235987 (or 224235985 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 646271056222212 in words is "six hundred forty-six trillion, two hundred seventy-one billion, fifty-six million, two hundred twenty-two thousand, two hundred twelve".