1111223031001 has 2 divisors, whose sum is σ = 1111223031002. Its totient is φ = 1111223031000.

The previous prime is 1111223030947. The next prime is 1111223031049. The reversal of 1111223031001 is 1001303221111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 697032963225 + 414190067776 = 834885^2 + 643576^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111223031001 - 2¹¹ = 1111223028953 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111223031601) 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 as a sum of consecutive naturals, namely, 555611515500 + 555611515501.

It is an arithmetic number, because the mean of its divisors is an integer number (555611515501).

Almost surely, 2^{1111223031001} is an apocalyptic number.

It is an amenable number.

1111223031001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111223031001 is an equidigital number, since it uses as much as digits as its factorization.

1111223031001 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1111223031001 its reverse (1001303221111), we get a palindrome (2112526252112).

The spelling of 1111223031001 in words is "one trillion, one hundred eleven billion, two hundred twenty-three million, thirty-one thousand, one".