111212011204 has 24 divisors (see below), whose sum is σ = 235507789440. Its totient is φ = 44858626176.

The previous prime is 111212011189. The next prime is 111212011217. The reversal of 111212011204 is 402110212111.

It is a super-2 number, since 2×111212011204² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116818864 + ... + 116819815.

It is an arithmetic number, because the mean of its divisors is an integer number (9812824560).

Almost surely, 2^111212011204 is an apocalyptic number.

111212011204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

111212011204 is an abundant number, since it is smaller than the sum of its proper divisors (124295778236).

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

111212011204 is a wasteful number, since it uses less digits than its factorization.

111212011204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233638707 (or 233638705 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111212011204 its reverse (402110212111), we get a palindrome (513322223315).

The spelling of 111212011204 in words is "one hundred eleven billion, two hundred twelve million, eleven thousand, two hundred four".