133121011001 has 4 divisors (see below), whose sum is σ = 145222921104. Its totient is φ = 121019100900.

The previous prime is 133121010983. The next prime is 133121011013. The reversal of 133121011001 is 100110121331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133121011001 - 2⁶ = 133121010937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133121011201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6050955035 + ... + 6050955056.

It is an arithmetic number, because the mean of its divisors is an integer number (36305730276).

Almost surely, 2^133121011001 is an apocalyptic number.

133121011001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133121011001 is a deficient number, since it is larger than the sum of its proper divisors (12101910103).

133121011001 is a wasteful number, since it uses less digits than its factorization.

133121011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12101910102.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 133121011001 its reverse (100110121331), we get a palindrome (233231132332).

The spelling of 133121011001 in words is "one hundred thirty-three billion, one hundred twenty-one million, eleven thousand, one".