1001111103223 has 16 divisors (see below), whose sum is σ = 1251674355456. Its totient is φ = 777876675840.

The previous prime is 1001111103211. The next prime is 1001111103227. The reversal of 1001111103223 is 3223011111001.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1001111103223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1001111103197 and 1001111103206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001111103227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18388461 + ... + 18442822.

It is an arithmetic number, because the mean of its divisors is an integer number (78229647216).

Almost surely, 2^{1001111103223} is an apocalyptic number.

1001111103223 is a deficient number, since it is larger than the sum of its proper divisors (250563252233).

1001111103223 is a wasteful number, since it uses less digits than its factorization.

1001111103223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36831654.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1001111103223 its reverse (3223011111001), we get a palindrome (4224122214224).

The spelling of 1001111103223 in words is "one trillion, one billion, one hundred eleven million, one hundred three thousand, two hundred twenty-three".