1111122100012 has 24 divisors (see below), whose sum is σ = 1965617611776. Its totient is φ = 549529572048.

The previous prime is 1111122100009. The next prime is 1111122100037. The reversal of 1111122100012 is 2100012211111.

It is a happy number.

It is a super-2 number, since 2×1111122100012² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1111122099965 and 1111122100001.

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, 1206958 + ... + 1918069.

It is an arithmetic number, because the mean of its divisors is an integer number (81900733824).

Almost surely, 2^{1111122100012} is an apocalyptic number.

It is an amenable number.

1111122100012 is a deficient number, since it is larger than the sum of its proper divisors (854495511764).

1111122100012 is a wasteful number, since it uses less digits than its factorization.

1111122100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125997 (or 3125995 counting only the distinct ones).

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

Adding to 1111122100012 its reverse (2100012211111), we get a palindrome (3211134311123).

The spelling of 1111122100012 in words is "one trillion, one hundred eleven billion, one hundred twenty-two million, one hundred thousand, twelve".