133321111 has 48 divisors (see below), whose sum is σ = 178606080. Its totient is φ = 98280000.

The previous prime is 133321099. The next prime is 133321117. The reversal of 133321111 is 111123331.

It is not a de Polignac number, because 133321111 - 2¹⁵ = 133288343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133321117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1319961 + ... + 1320061.

It is an arithmetic number, because the mean of its divisors is an integer number (3720960).

Almost surely, 2^133321111 is an apocalyptic number.

133321111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133321111 is a deficient number, since it is larger than the sum of its proper divisors (45284969).

133321111 is a wasteful number, since it uses less digits than its factorization.

133321111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 229 counting only the distinct ones).

The product of its digits is 54, while the sum is 16.

The square root of 133321111 is about 11546.4761291054. The cubic root of 133321111 is about 510.8573443032.

Adding to 133321111 its reverse (111123331), we get a palindrome (244444442).

The spelling of 133321111 in words is "one hundred thirty-three million, three hundred twenty-one thousand, one hundred eleven".