11211213 has 16 divisors (see below), whose sum is σ = 16209536. Its totient is φ = 6851520.

The previous prime is 11211209. The next prime is 11211217. The reversal of 11211213 is 31211211.

11211213 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11211209) and next prime (11211217).

It is not a de Polignac number, because 11211213 - 2² = 11211209 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 (11211217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5208 + ... + 7038.

It is an arithmetic number, because the mean of its divisors is an integer number (1013096).

Almost surely, 2^11211213 is an apocalyptic number.

11211213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11211213 is a deficient number, since it is larger than the sum of its proper divisors (4998323).

11211213 is a wasteful number, since it uses less digits than its factorization.

11211213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004.

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

The square root of 11211213 is about 3348.3149493439. The cubic root of 11211213 is about 223.8124293407.

Adding to 11211213 its reverse (31211211), we get a palindrome (42422424).

It can be divided in two parts, 112 and 11213, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 11211213 in words is "eleven million, two hundred eleven thousand, two hundred thirteen".