641123212 has 6 divisors (see below), whose sum is σ = 1121965628. Its totient is φ = 320561604.

The previous prime is 641123209. The next prime is 641123239. The reversal of 641123212 is 212321146.

It is a super-2 number, since 2×641123212² = 822077945930393888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80140398 + ... + 80140405.

Almost surely, 2^641123212 is an apocalyptic number.

It is an amenable number.

641123212 is a deficient number, since it is larger than the sum of its proper divisors (480842416).

641123212 is a wasteful number, since it uses less digits than its factorization.

641123212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160280807 (or 160280805 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 641123212 is about 25320.4109761275. The cubic root of 641123212 is about 862.2777244767.

Adding to 641123212 its reverse (212321146), we get a palindrome (853444358).

The spelling of 641123212 in words is "six hundred forty-one million, one hundred twenty-three thousand, two hundred twelve".