6505211212003 has 16 divisors (see below), whose sum is σ = 7872041329344. Its totient is φ = 5247775411200.

The previous prime is 6505211211943. The next prime is 6505211212009. The reversal of 6505211212003 is 3002121125056.

It is a de Polignac number, because none of the positive numbers 2^k-6505211212003 is a prime.

It is a super-2 number, since 2×6505211212003² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4486303 + ... + 5756503.

It is an arithmetic number, because the mean of its divisors is an integer number (492002583084).

Almost surely, 2^{6505211212003} is an apocalyptic number.

6505211212003 is a deficient number, since it is larger than the sum of its proper divisors (1366830117341).

6505211212003 is a wasteful number, since it uses less digits than its factorization.

6505211212003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313262.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 6505211212003 its reverse (3002121125056), we get a palindrome (9507332337059).

The spelling of 6505211212003 in words is "six trillion, five hundred five billion, two hundred eleven million, two hundred twelve thousand, three".