133121231111 has 8 divisors (see below), whose sum is σ = 146633096064. Its totient is φ = 119844355320.

The previous prime is 133121231081. The next prime is 133121231119. The reversal of 133121231111 is 111132121331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133121231111 - 2²² = 133117036807 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 (133121231119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58746101 + ... + 58748366.

It is an arithmetic number, because the mean of its divisors is an integer number (18329137008).

Almost surely, 2^133121231111 is an apocalyptic number.

133121231111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133121231111 is a deficient number, since it is larger than the sum of its proper divisors (13511864953).

133121231111 is a wasteful number, since it uses less digits than its factorization.

133121231111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117494581.

The product of its digits is 108, while the sum is 20.

Adding to 133121231111 its reverse (111132121331), we get a palindrome (244253352442).

The spelling of 133121231111 in words is "one hundred thirty-three billion, one hundred twenty-one million, two hundred thirty-one thousand, one hundred eleven".