111012211212 has 24 divisors (see below), whose sum is σ = 296032563456. Its totient is φ = 31717774608.

The previous prime is 111012211181. The next prime is 111012211253. The reversal of 111012211212 is 212112210111.

It is a happy number.

It is a super-2 number, since 2×111012211212² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111012211191 and 111012211200.

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, 660786888 + ... + 660787055.

It is an arithmetic number, because the mean of its divisors is an integer number (12334690144).

Almost surely, 2^111012211212 is an apocalyptic number.

111012211212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111012211212 is an abundant number, since it is smaller than the sum of its proper divisors (185020352244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111012211212 is a wasteful number, since it uses less digits than its factorization.

111012211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321573957 (or 1321573955 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111012211212 its reverse (212112210111), we get a palindrome (323124421323).

The spelling of 111012211212 in words is "one hundred eleven billion, twelve million, two hundred eleven thousand, two hundred twelve".