133023011021 has 4 divisors (see below), whose sum is σ = 133023802044. Its totient is φ = 133022220000.

The previous prime is 133023010993. The next prime is 133023011029. The reversal of 133023011021 is 120110320331.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 64907752900 + 68115258121 = 254770^2 + 260989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133023011021 is a prime.

It is a super-2 number, since 2×133023011021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133023011029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31730 + ... + 516771.

It is an arithmetic number, because the mean of its divisors is an integer number (33255950511).

Almost surely, 2^133023011021 is an apocalyptic number.

It is an amenable number.

133023011021 is a deficient number, since it is larger than the sum of its proper divisors (791023).

133023011021 is an equidigital number, since it uses as much as digits as its factorization.

133023011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791022.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 133023011021 its reverse (120110320331), we get a palindrome (253133331352).

The spelling of 133023011021 in words is "one hundred thirty-three billion, twenty-three million, eleven thousand, twenty-one".