221111011102023 has 18 divisors (see below), whose sum is σ = 371526664913664. Its totient is φ = 126349149200904.

The previous prime is 221111011102019. The next prime is 221111011102043. The reversal of 221111011102023 is 320201110111122.

It is a happy number.

221111011102023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221111011102023 - 2² = 221111011102019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221111011101987 and 221111011102005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221111011102043) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 250692755911 + ... + 250692756792.

Almost surely, 2^{221111011102023} is an apocalyptic number.

221111011102023 is a deficient number, since it is larger than the sum of its proper divisors (150415653811641).

221111011102023 is a wasteful number, since it uses less digits than its factorization.

221111011102023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501385512723 (or 501385512713 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 221111011102023 its reverse (320201110111122), we get a palindrome (541312121213145).

Subtracting 221111011102023 from its reverse (320201110111122), we obtain a palindrome (99090099009099).

It can be divided in two parts, 22111101 and 1102023, that added together give a square (23213124 = 4818²).

The spelling of 221111011102023 in words is "two hundred twenty-one trillion, one hundred eleven billion, eleven million, one hundred two thousand, twenty-three".