641332212 has 12 divisors (see below), whose sum is σ = 1496441856. Its totient is φ = 213777400.

The previous prime is 641332199. The next prime is 641332261. The reversal of 641332212 is 212233146.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×641332212² = 822614012297625888, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26722164 + ... + 26722187.

It is an arithmetic number, because the mean of its divisors is an integer number (124703488).

Almost surely, 2^641332212 is an apocalyptic number.

It is an amenable number.

641332212 is an abundant number, since it is smaller than the sum of its proper divisors (855109644).

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

641332212 is a wasteful number, since it uses less digits than its factorization.

641332212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53444358 (or 53444356 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 641332212 is about 25324.5377450409. The cubic root of 641332212 is about 862.3714123782.

Adding to 641332212 its reverse (212233146), we get a palindrome (853565358).

The spelling of 641332212 in words is "six hundred forty-one million, three hundred thirty-two thousand, two hundred twelve".