1100220109991 has 2 divisors, whose sum is σ = 1100220109992. Its totient is φ = 1100220109990.

The previous prime is 1100220109979. The next prime is 1100220110009. The reversal of 1100220109991 is 1999010220011.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1100220109991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100220109921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550110054995 + 550110054996.

It is an arithmetic number, because the mean of its divisors is an integer number (550110054996).

Almost surely, 2^{1100220109991} is an apocalyptic number.

1100220109991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100220109991 is an equidigital number, since it uses as much as digits as its factorization.

1100220109991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 35.

The spelling of 1100220109991 in words is "one trillion, one hundred billion, two hundred twenty million, one hundred nine thousand, nine hundred ninety-one".