11212064643 has 32 divisors (see below), whose sum is σ = 16281345024. Its totient is φ = 6822047232.

The previous prime is 11212064639. The next prime is 11212064659. The reversal of 11212064643 is 34646021211.

It is not a de Polignac number, because 11212064643 - 2² = 11212064639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11212064643.

It is not an unprimeable number, because it can be changed into a prime (11212064603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1949430 + ... + 1955172.

It is an arithmetic number, because the mean of its divisors is an integer number (508792032).

Almost surely, 2^11212064643 is an apocalyptic number.

11212064643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11212064643 is a deficient number, since it is larger than the sum of its proper divisors (5069280381).

11212064643 is a wasteful number, since it uses less digits than its factorization.

11212064643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6315.

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 11212064643 its reverse (34646021211), we get a palindrome (45858085854).

The spelling of 11212064643 in words is "eleven billion, two hundred twelve million, sixty-four thousand, six hundred forty-three".