133121310111 has 16 divisors (see below), whose sum is σ = 197222379520. Its totient is φ = 88745009400.

The previous prime is 133121310109. The next prime is 133121310131. The reversal of 133121310111 is 111013121331.

133121310111 is a `hidden beast` number, since 1 + 331 + 21 + 310 + 1 + 1 + 1 = 666.

It is not a de Polignac number, because 133121310111 - 2¹ = 133121310109 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 (133121310131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1770636 + ... + 1844286.

It is an arithmetic number, because the mean of its divisors is an integer number (12326398720).

Almost surely, 2^133121310111 is an apocalyptic number.

133121310111 is a deficient number, since it is larger than the sum of its proper divisors (64101069409).

133121310111 is an equidigital number, since it uses as much as digits as its factorization.

133121310111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140603 (or 140597 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 133121310111 its reverse (111013121331), we get a palindrome (244134431442).

The spelling of 133121310111 in words is "one hundred thirty-three billion, one hundred twenty-one million, three hundred ten thousand, one hundred eleven".