11212204534 has 4 divisors (see below), whose sum is σ = 16818306804. Its totient is φ = 5606102266.

The previous prime is 11212204517. The next prime is 11212204543. The reversal of 11212204534 is 43540221211.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 11212204499 and 11212204508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2803051132 + ... + 2803051135.

It is an arithmetic number, because the mean of its divisors is an integer number (4204576701).

Almost surely, 2^11212204534 is an apocalyptic number.

11212204534 is a deficient number, since it is larger than the sum of its proper divisors (5606102270).

11212204534 is an equidigital number, since it uses as much as digits as its factorization.

11212204534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5606102269.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 11212204534 its reverse (43540221211), we get a palindrome (54752425745).

The spelling of 11212204534 in words is "eleven billion, two hundred twelve million, two hundred four thousand, five hundred thirty-four".