1133221408 has 192 divisors, whose sum is σ = 2743372800. Its totient is φ = 454671360.

The previous prime is 1133221379. The next prime is 1133221409. The reversal of 1133221408 is 8041223311.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1133221409) 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, 8152603 + ... + 8152741.

It is an arithmetic number, because the mean of its divisors is an integer number (14288400).

Almost surely, 2^1133221408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1133221408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1371686400).

1133221408 is an abundant number, since it is smaller than the sum of its proper divisors (1610151392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1133221408 is a wasteful number, since it uses less digits than its factorization.

1133221408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1133221408 is about 33663.3540812558. The cubic root of 1133221408 is about 1042.5692786361.

Adding to 1133221408 its reverse (8041223311), we get a palindrome (9174444719).

The spelling of 1133221408 in words is "one billion, one hundred thirty-three million, two hundred twenty-one thousand, four hundred eight".