1111012221012 has 24 divisors (see below), whose sum is σ = 2600806033056. Its totient is φ = 369131095008.

The previous prime is 1111012220959. The next prime is 1111012221013. The reversal of 1111012221012 is 2101222101111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1111012220982 and 1111012221000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111012221013) by changing a digit.

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, 150785163 + ... + 150792530.

It is an arithmetic number, because the mean of its divisors is an integer number (108366918044).

Almost surely, 2^{1111012221012} is an apocalyptic number.

1111012221012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1111012221012 is an abundant number, since it is smaller than the sum of its proper divisors (1489793812044).

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

1111012221012 is a wasteful number, since it uses less digits than its factorization.

1111012221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301578007 (or 301578005 counting only the distinct ones).

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

Adding to 1111012221012 its reverse (2101222101111), we get a palindrome (3212234322123).

The spelling of 1111012221012 in words is "one trillion, one hundred eleven billion, twelve million, two hundred twenty-one thousand, twelve".