6505211212002 has 48 divisors (see below), whose sum is σ = 14251773027960. Its totient is φ = 2144280096000.

The previous prime is 6505211211943. The next prime is 6505211212009. The reversal of 6505211212002 is 2002121125056.

6505211212002 is a `hidden beast` number, since 6 + 5 + 0 + 521 + 12 + 120 + 0 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6357402489321 + 147808722681 = 2521389^2 + 384459^2 .

It is not an unprimeable number, because it can be changed into a prime (6505211212009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 740749 + ... + 3682272.

Almost surely, 2^{6505211212002} is an apocalyptic number.

6505211212002 is an abundant number, since it is smaller than the sum of its proper divisors (7746561815958).

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

6505211212002 is a wasteful number, since it uses less digits than its factorization.

6505211212002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4423939 (or 4423936 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 6505211212002 its reverse (2002121125056), we get a palindrome (8507332337058).

The spelling of 6505211212002 in words is "six trillion, five hundred five billion, two hundred eleven million, two hundred twelve thousand, two".