10001111221223 has 2 divisors, whose sum is σ = 10001111221224. Its totient is φ = 10001111221222.

The previous prime is 10001111221187. The next prime is 10001111221229. The reversal of 10001111221223 is 32212211110001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10001111221223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10001111221229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000555610611 + 5000555610612.

It is an arithmetic number, because the mean of its divisors is an integer number (5000555610612).

Almost surely, 2^{10001111221223} is an apocalyptic number.

10001111221223 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001111221223 is an equidigital number, since it uses as much as digits as its factorization.

10001111221223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 10001111221223 its reverse (32212211110001), we get a palindrome (42213322331224).

The spelling of 10001111221223 in words is "ten trillion, one billion, one hundred eleven million, two hundred twenty-one thousand, two hundred twenty-three".