1109947112020 has 24 divisors (see below), whose sum is σ = 2374867974024. Its totient is φ = 435601885056.

The previous prime is 1109947112003. The next prime is 1109947112039. The reversal of 1109947112020 is 202117499011.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 136926641296 + 973020470724 = 370036^2 + 986418^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523558899 + ... + 523561018.

It is an arithmetic number, because the mean of its divisors is an integer number (98952832251).

Almost surely, 2^{1109947112020} is an apocalyptic number.

1109947112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1109947112020 is an abundant number, since it is smaller than the sum of its proper divisors (1264920862004).

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

1109947112020 is a wasteful number, since it uses less digits than its factorization.

1109947112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047119979 (or 1047119977 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 37.

The spelling of 1109947112020 in words is "one trillion, one hundred nine billion, nine hundred forty-seven million, one hundred twelve thousand, twenty".