11121103212 has 24 divisors (see below), whose sum is σ = 25951690800. Its totient is φ = 3706684416.

The previous prime is 11121103211. The next prime is 11121103241. The reversal of 11121103212 is 21230112111.

It is a junction number, because it is equal to n+sod(n) for n = 11121103191 and 11121103200.

It is not an unprimeable number, because it can be changed into a prime (11121103211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110364 + ... + 185532.

It is an arithmetic number, because the mean of its divisors is an integer number (1081320450).

Almost surely, 2^11121103212 is an apocalyptic number.

11121103212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11121103212 is an abundant number, since it is smaller than the sum of its proper divisors (14830587588).

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

11121103212 is a wasteful number, since it uses less digits than its factorization.

11121103212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87505 (or 87503 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11121103212 its reverse (21230112111), we get a palindrome (32351215323).

The spelling of 11121103212 in words is "eleven billion, one hundred twenty-one million, one hundred three thousand, two hundred twelve".