211111330012 has 24 divisors (see below), whose sum is σ = 403361990640. Its totient is φ = 95880821760.

The previous prime is 211111330009. The next prime is 211111330093. The reversal of 211111330012 is 210033111112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1917687 + ... + 2024782.

It is an arithmetic number, because the mean of its divisors is an integer number (16806749610).

Almost surely, 2^211111330012 is an apocalyptic number.

211111330012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211111330012 is a deficient number, since it is larger than the sum of its proper divisors (192250660628).

211111330012 is a wasteful number, since it uses less digits than its factorization.

211111330012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943701 (or 3943699 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 211111330012 its reverse (210033111112), we get a palindrome (421144441124).

The spelling of 211111330012 in words is "two hundred eleven billion, one hundred eleven million, three hundred thirty thousand, twelve".