133023221000021 has 4 divisors (see below), whose sum is σ = 145116241090944. Its totient is φ = 120930200909100.

The previous prime is 133023221000017. The next prime is 133023221000023. The reversal of 133023221000021 is 120000122320331.

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 not a de Polignac number, because 133023221000021 - 2² = 133023221000017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133023220999957 and 133023221000002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133023221000023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6046510045445 + ... + 6046510045466.

It is an arithmetic number, because the mean of its divisors is an integer number (36279060272736).

Almost surely, 2^{133023221000021} is an apocalyptic number.

133023221000021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133023221000021 is a deficient number, since it is larger than the sum of its proper divisors (12093020090923).

133023221000021 is a wasteful number, since it uses less digits than its factorization.

133023221000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12093020090922.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 133023221000021 its reverse (120000122320331), we get a palindrome (253023343320352).

The spelling of 133023221000021 in words is "one hundred thirty-three trillion, twenty-three billion, two hundred twenty-one million, twenty-one", and thus it is an aban number.