133100022021 has 4 divisors (see below), whose sum is σ = 177466696032. Its totient is φ = 88733348012.

The previous prime is 133100022001. The next prime is 133100022047. The reversal of 133100022021 is 120220001331.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120220001331 = 3 ⋅40073333777.

It is a cyclic number.

It is not a de Polignac number, because 133100022021 - 2¹⁴ = 133100005637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133100022001) 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, 22183337001 + ... + 22183337006.

It is an arithmetic number, because the mean of its divisors is an integer number (44366674008).

Almost surely, 2^133100022021 is an apocalyptic number.

It is an amenable number.

133100022021 is a deficient number, since it is larger than the sum of its proper divisors (44366674011).

133100022021 is an equidigital number, since it uses as much as digits as its factorization.

133100022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44366674010.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 133100022021 its reverse (120220001331), we get a palindrome (253320023352).

The spelling of 133100022021 in words is "one hundred thirty-three billion, one hundred million, twenty-two thousand, twenty-one".