11211210212 has 6 divisors (see below), whose sum is σ = 19619617878. Its totient is φ = 5605605104.

The previous prime is 11211210209. The next prime is 11211210259. The reversal of 11211210212 is 21201211211.

It can be written as a sum of positive squares in only one way, i.e., 8534803456 + 2676406756 = 92384^2 + 51734^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1401401273 + ... + 1401401280.

It is an arithmetic number, because the mean of its divisors is an integer number (3269936313).

Almost surely, 2^11211210212 is an apocalyptic number.

It is an amenable number.

11211210212 is a deficient number, since it is larger than the sum of its proper divisors (8408407666).

11211210212 is a wasteful number, since it uses less digits than its factorization.

11211210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802802557 (or 2802802555 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11211210212 its reverse (21201211211), we get a palindrome (32412421423).

Subtracting 11211210212 from its reverse (21201211211), we obtain a palindrome (9990000999).

The spelling of 11211210212 in words is "eleven billion, two hundred eleven million, two hundred ten thousand, two hundred twelve".