1101111221020 has 12 divisors (see below), whose sum is σ = 2312333564184. Its totient is φ = 440444488400.

The previous prime is 1101111220969. The next prime is 1101111221051. The reversal of 1101111221020 is 201221111011.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27527780506 + ... + 27527780545.

It is an arithmetic number, because the mean of its divisors is an integer number (192694463682).

Almost surely, 2^{1101111221020} is an apocalyptic number.

1101111221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101111221020 is an abundant number, since it is smaller than the sum of its proper divisors (1211222343164).

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

1101111221020 is a wasteful number, since it uses less digits than its factorization.

1101111221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55055561060 (or 55055561058 counting only the distinct ones).

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

Adding to 1101111221020 its reverse (201221111011), we get a palindrome (1302332332031).

The spelling of 1101111221020 in words is "one trillion, one hundred one billion, one hundred eleven million, two hundred twenty-one thousand, twenty".