1109966215051 has 4 divisors (see below), whose sum is σ = 1110140224600. Its totient is φ = 1109792205504.

The previous prime is 1109966214991. The next prime is 1109966215153. The reversal of 1109966215051 is 1505126699011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1109966215051 - 2¹⁹ = 1109965690763 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1109966214992 and 1109966215010.

It is not an unprimeable number, because it can be changed into a prime (1109966215451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86995206 + ... + 87007963.

It is an arithmetic number, because the mean of its divisors is an integer number (277535056150).

Almost surely, 2^{1109966215051} is an apocalyptic number.

1109966215051 is a deficient number, since it is larger than the sum of its proper divisors (174009549).

1109966215051 is an equidigital number, since it uses as much as digits as its factorization.

1109966215051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174009548.

The product of its (nonzero) digits is 145800, while the sum is 46.

The spelling of 1109966215051 in words is "one trillion, one hundred nine billion, nine hundred sixty-six million, two hundred fifteen thousand, fifty-one".