1101232221000 has 128 divisors (see below), whose sum is σ = 3528705548160. Its totient is φ = 285725088000.

The previous prime is 1101232220999. The next prime is 1101232221007. The reversal of 1101232221000 is 1222321011.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1101232221007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4849506 + ... + 5071505.

It is an arithmetic number, because the mean of its divisors is an integer number (27568012095).

Almost surely, 2^{1101232221000} is an apocalyptic number.

1101232221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101232221000 is an abundant number, since it is smaller than the sum of its proper divisors (2427473327160).

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

1101232221000 is a wasteful number, since it uses less digits than its factorization.

1101232221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9921072 (or 9921058 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1101232221000 its reverse (1222321011), we get a palindrome (1102454542011).

The spelling of 1101232221000 in words is "one trillion, one hundred one billion, two hundred thirty-two million, two hundred twenty-one thousand".