1100221122012 has 12 divisors (see below), whose sum is σ = 2567182618056. Its totient is φ = 366740374000.

The previous prime is 1100221122001. The next prime is 1100221122019. The reversal of 1100221122012 is 2102211220011.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1100221121982 and 1100221122000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100221122019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45842546739 + ... + 45842546762.

It is an arithmetic number, because the mean of its divisors is an integer number (213931884838).

Almost surely, 2^{1100221122012} is an apocalyptic number.

1100221122012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1100221122012 is an abundant number, since it is smaller than the sum of its proper divisors (1466961496044).

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

1100221122012 is a wasteful number, since it uses less digits than its factorization.

1100221122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91685093508 (or 91685093506 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1100221122012 its reverse (2102211220011), we get a palindrome (3202432342023).

The spelling of 1100221122012 in words is "one trillion, one hundred billion, two hundred twenty-one million, one hundred twenty-two thousand, twelve".