1100220012 has 36 divisors (see below), whose sum is σ = 2856280336. Its totient is φ = 356827680.

The previous prime is 1100220007. The next prime is 1100220013. The reversal of 1100220012 is 2100220011.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1100219976 and 1100220003.

It is not an unprimeable number, because it can be changed into a prime (1100220013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 411664 + ... + 414327.

Almost surely, 2^1100220012 is an apocalyptic number.

1100220012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1100220012 is an abundant number, since it is smaller than the sum of its proper divisors (1756060324).

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

1100220012 is a wasteful number, since it uses less digits than its factorization.

1100220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826038 (or 826033 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1100220012 is about 33169.5645434184. The cubic root of 1100220012 is about 1032.3489332966.

Adding to 1100220012 its reverse (2100220011), we get a palindrome (3200440023).

Subtracting 1100220012 from its reverse (2100220011), we obtain a palindrome (999999999).

The spelling of 1100220012 in words is "one billion, one hundred million, two hundred twenty thousand, twelve".