133021131111 has 72 divisors (see below), whose sum is σ = 217148899968. Its totient is φ = 78364994400.

The previous prime is 133021131101. The next prime is 133021131149. The reversal of 133021131111 is 111131120331.

133021131111 is a `hidden beast` number, since 1 + 330 + 2 + 11 + 311 + 11 = 666.

It is not a de Polignac number, because 133021131111 - 2¹¹ = 133021129063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133021131101) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9873766 + ... + 9887228.

It is an arithmetic number, because the mean of its divisors is an integer number (3015956944).

Almost surely, 2^133021131111 is an apocalyptic number.

133021131111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133021131111 is a deficient number, since it is larger than the sum of its proper divisors (84127768857).

133021131111 is a wasteful number, since it uses less digits than its factorization.

133021131111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13745 (or 13731 counting only the distinct ones).

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

Adding to 133021131111 its reverse (111131120331), we get a palindrome (244152251442).

The spelling of 133021131111 in words is "one hundred thirty-three billion, twenty-one million, one hundred thirty-one thousand, one hundred eleven".