11211110212 has 24 divisors (see below), whose sum is σ = 19951269912. Its totient is φ = 5510841600.

The previous prime is 11211110161. The next prime is 11211110263. The reversal of 11211110212 is 21201111211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11211110161) and next prime (11211110263).

It can be written as a sum of positive squares in 4 ways, for example, as 416731396 + 10794378816 = 20414^2 + 103896^2 .

It is a super-2 number, since 2×11211110212² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11211110192 and 11211110201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514662 + ... + 536002.

It is an arithmetic number, because the mean of its divisors is an integer number (831302913).

Almost surely, 2^11211110212 is an apocalyptic number.

It is an amenable number.

11211110212 is a deficient number, since it is larger than the sum of its proper divisors (8740159700).

11211110212 is a wasteful number, since it uses less digits than its factorization.

11211110212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23559 (or 23557 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11211110212 its reverse (21201111211), we get a palindrome (32412221423).

Subtracting 11211110212 from its reverse (21201111211), we obtain a palindrome (9990000999).

The spelling of 11211110212 in words is "eleven billion, two hundred eleven million, one hundred ten thousand, two hundred twelve".