6543212102 has 16 divisors (see below), whose sum is σ = 11243715840. Its totient is φ = 2797538568.

The previous prime is 6543212101. The next prime is 6543212111. The reversal of 6543212102 is 2012123456.

It is a happy number.

It is a super-2 number, since 2×6543212102² = 85627249223518516808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543212101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551858 + ... + 563589.

It is an arithmetic number, because the mean of its divisors is an integer number (702732240).

Almost surely, 2^6543212102 is an apocalyptic number.

6543212102 is a deficient number, since it is larger than the sum of its proper divisors (4700503738).

6543212102 is a wasteful number, since it uses less digits than its factorization.

6543212102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115875.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 6543212102 is about 80890.1236369435. The cubic root of 6543212102 is about 1870.3820796486.

Adding to 6543212102 its reverse (2012123456), we get a palindrome (8555335558).

The spelling of 6543212102 in words is "six billion, five hundred forty-three million, two hundred twelve thousand, one hundred two".