1223211123 has 12 divisors (see below), whose sum is σ = 1767926160. Its totient is φ = 814982256.

The previous prime is 1223211079. The next prime is 1223211131. The reversal of 1223211123 is 3211123221.

It is not a de Polignac number, because 1223211123 - 2⁸ = 1223210867 is a prime.

It is a super-2 number, since 2×1223211123² = 2992490902861842258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1223211096 and 1223211105.

It is not an unprimeable number, because it can be changed into a prime (1223211193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24903 + ... + 55376.

It is an arithmetic number, because the mean of its divisors is an integer number (147327180).

Almost surely, 2^1223211123 is an apocalyptic number.

1223211123 is a deficient number, since it is larger than the sum of its proper divisors (544715037).

1223211123 is a wasteful number, since it uses less digits than its factorization.

1223211123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81978 (or 81975 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1223211123 is about 34974.4352777854. The cubic root of 1223211123 is about 1069.4663898265.

Adding to 1223211123 its reverse (3211123221), we get a palindrome (4434334344).

The spelling of 1223211123 in words is "one billion, two hundred twenty-three million, two hundred eleven thousand, one hundred twenty-three".