11312021212 has 6 divisors (see below), whose sum is σ = 19796037128. Its totient is φ = 5656010604.

The previous prime is 11312021183. The next prime is 11312021243. The reversal of 11312021212 is 21212021311.

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, 1414002648 + ... + 1414002655.

Almost surely, 2^11312021212 is an apocalyptic number.

It is an amenable number.

11312021212 is a deficient number, since it is larger than the sum of its proper divisors (8484015916).

11312021212 is a wasteful number, since it uses less digits than its factorization.

11312021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2828005307 (or 2828005305 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11312021212 its reverse (21212021311), we get a palindrome (32524042523).

Subtracting 11312021212 from its reverse (21212021311), we obtain a palindrome (9900000099).

The spelling of 11312021212 in words is "eleven billion, three hundred twelve million, twenty-one thousand, two hundred twelve".