11012111212 has 12 divisors (see below), whose sum is σ = 20109072816. Its totient is φ = 5266661840.

The previous prime is 11012111207. The next prime is 11012111213. The reversal of 11012111212 is 21211121011.

It is a happy number.

It is a super-2 number, since 2×11012111212² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11012111192 and 11012111201.

It is not an unprimeable number, because it can be changed into a prime (11012111213) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 59848339 + ... + 59848522.

It is an arithmetic number, because the mean of its divisors is an integer number (1675756068).

Almost surely, 2^11012111212 is an apocalyptic number.

It is an amenable number.

11012111212 is a deficient number, since it is larger than the sum of its proper divisors (9096961604).

11012111212 is a wasteful number, since it uses less digits than its factorization.

11012111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119696888 (or 119696886 counting only the distinct ones).

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

Adding to 11012111212 its reverse (21211121011), we get a palindrome (32223232223).

The spelling of 11012111212 in words is "eleven billion, twelve million, one hundred eleven thousand, two hundred twelve".