1223111203223 has 24 divisors (see below), whose sum is σ = 1585085402880. Its totient is φ = 934366104000.

The previous prime is 1223111203157. The next prime is 1223111203243. The reversal of 1223111203223 is 3223021113221.

It is not a de Polignac number, because 1223111203223 - 2¹⁶ = 1223111137687 is a prime.

It is a super-2 number, since 2×1223111203223² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223111203243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33086903 + ... + 33123848.

It is an arithmetic number, because the mean of its divisors is an integer number (66045225120).

Almost surely, 2^{1223111203223} is an apocalyptic number.

1223111203223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1223111203223 is a deficient number, since it is larger than the sum of its proper divisors (361974199657).

1223111203223 is a wasteful number, since it uses less digits than its factorization.

1223111203223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66210807 (or 66210800 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1223111203223 its reverse (3223021113221), we get a palindrome (4446132316444).

The spelling of 1223111203223 in words is "one trillion, two hundred twenty-three billion, one hundred eleven million, two hundred three thousand, two hundred twenty-three".