133000123021 has 4 divisors (see below), whose sum is σ = 134985199552. Its totient is φ = 131015046492.

The previous prime is 133000122953. The next prime is 133000123027. The reversal of 133000123021 is 120321000331.

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 133000123021 - 2¹³ = 133000114829 is a prime.

It is a super-2 number, since 2×133000123021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133000122986 and 133000123004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133000123027) 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, 992538165 + ... + 992538298.

It is an arithmetic number, because the mean of its divisors is an integer number (33746299888).

Almost surely, 2^133000123021 is an apocalyptic number.

It is an amenable number.

133000123021 is a deficient number, since it is larger than the sum of its proper divisors (1985076531).

133000123021 is an equidigital number, since it uses as much as digits as its factorization.

133000123021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1985076530.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 133000123021 its reverse (120321000331), we get a palindrome (253321123352).

The spelling of 133000123021 in words is "one hundred thirty-three billion, one hundred twenty-three thousand, twenty-one".