1122223221 has 32 divisors (see below), whose sum is σ = 1918905600. Its totient is φ = 634910400.

The previous prime is 1122223211. The next prime is 1122223229. The reversal of 1122223221 is 1223222211.

It is not a de Polignac number, because 1122223221 - 2¹⁴ = 1122206837 is a prime.

It is a super-2 number, since 2×1122223221² = 2518769915503229682, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1122223194 and 1122223203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122223229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10306 + ... + 48483.

It is an arithmetic number, because the mean of its divisors is an integer number (59965800).

Almost surely, 2^1122223221 is an apocalyptic number.

It is an amenable number.

1122223221 is a deficient number, since it is larger than the sum of its proper divisors (796682379).

1122223221 is a wasteful number, since it uses less digits than its factorization.

1122223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58906 (or 58900 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 1122223221 is about 33499.6003110485. The cubic root of 1122223221 is about 1039.1855127481.

Adding to 1122223221 its reverse (1223222211), we get a palindrome (2345445432).

It can be divided in two parts, 11222 and 23221, that added together give a palindrome (34443).

The spelling of 1122223221 in words is "one billion, one hundred twenty-two million, two hundred twenty-three thousand, two hundred twenty-one".