1101233221 has 12 divisors (see below), whose sum is σ = 1214355436. Its totient is φ = 997888320.

The previous prime is 1101233209. The next prime is 1101233267. The reversal of 1101233221 is 1223321011.

It can be written as a sum of positive squares in 2 ways, for example, as 345588100 + 755645121 = 18590^2 + 27489^2 .

It is not a de Polignac number, because 1101233221 - 2⁷ = 1101233093 is a prime.

It is a super-3 number, since 3×1101233221³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101233195 and 1101233204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101233201) 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, 23335 + ... + 52411.

Almost surely, 2^1101233221 is an apocalyptic number.

1101233221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1101233221 is a deficient number, since it is larger than the sum of its proper divisors (113122215).

1101233221 is a wasteful number, since it uses less digits than its factorization.

1101233221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29412 (or 29401 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1101233221 is about 33184.8342017856. The cubic root of 1101233221 is about 1032.6657379039.

Adding to 1101233221 its reverse (1223321011), we get a palindrome (2324554232).

The spelling of 1101233221 in words is "one billion, one hundred one million, two hundred thirty-three thousand, two hundred twenty-one".