11220133505 has 16 divisors (see below), whose sum is σ = 15537010944. Its totient is φ = 7619106240.

The previous prime is 11220133471. The next prime is 11220133523. The reversal of 11220133505 is 50533102211.

It is a happy number.

It is not a de Polignac number, because 11220133505 - 2¹² = 11220129409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1552586 + ... + 1559795.

It is an arithmetic number, because the mean of its divisors is an integer number (971063184).

Almost surely, 2^11220133505 is an apocalyptic number.

It is an amenable number.

11220133505 is a deficient number, since it is larger than the sum of its proper divisors (4316877439).

11220133505 is a wasteful number, since it uses less digits than its factorization.

11220133505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3112496.

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 11220133505 its reverse (50533102211), we get a palindrome (61753235716).

The spelling of 11220133505 in words is "eleven billion, two hundred twenty million, one hundred thirty-three thousand, five hundred five".