1100011221000 has 192 divisors, whose sum is σ = 3818526594480. Its totient is φ = 285408230400.

The previous prime is 1100011220993. The next prime is 1100011221011. The reversal of 1100011221000 is 1221100011.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 147829484196 + 952181736804 = 384486^2 + 975798^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1318669 + ... + 1984668.

Almost surely, 2^{1100011221000} is an apocalyptic number.

1100011221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100011221000 is an abundant number, since it is smaller than the sum of its proper divisors (2718515373480).

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

1100011221000 is a wasteful number, since it uses less digits than its factorization.

1100011221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3303401 (or 3303384 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1100011221000 its reverse (1221100011), we get a palindrome (1101232321011).

The spelling of 1100011221000 in words is "one trillion, one hundred billion, eleven million, two hundred twenty-one thousand".