1111211213 has 16 divisors (see below), whose sum is σ = 1367924736. Its totient is φ = 881662320.

The previous prime is 1111211209. The next prime is 1111211243. The reversal of 1111211213 is 3121121111.

It is not a de Polignac number, because 1111211213 - 2² = 1111211209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111211243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106331 + ... + 116312.

It is an arithmetic number, because the mean of its divisors is an integer number (85495296).

Almost surely, 2^1111211213 is an apocalyptic number.

It is an amenable number.

1111211213 is a deficient number, since it is larger than the sum of its proper divisors (256713523).

1111211213 is a wasteful number, since it uses less digits than its factorization.

1111211213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222704.

The product of its digits is 12, while the sum is 14.

The square root of 1111211213 is about 33334.8348278494. The cubic root of 1111211213 is about 1035.7752717016.

Adding to 1111211213 its reverse (3121121111), we get a palindrome (4232332324).

The spelling of 1111211213 in words is "one billion, one hundred eleven million, two hundred eleven thousand, two hundred thirteen".