133153044021 has 20 divisors (see below), whose sum is σ = 198918772800. Its totient is φ = 88763724936.

The previous prime is 133153044019. The next prime is 133153044029. The reversal of 133153044021 is 120440351331.

It is a happy number.

133153044021 is a `hidden beast` number, since 1 + 3 + 315 + 304 + 40 + 2 + 1 = 666.

It is not a de Polignac number, because 133153044021 - 2¹ = 133153044019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133153044029) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1929450 + ... + 1997268.

It is an arithmetic number, because the mean of its divisors is an integer number (9945938640).

Almost surely, 2^133153044021 is an apocalyptic number.

It is an amenable number.

133153044021 is a deficient number, since it is larger than the sum of its proper divisors (65765728779).

133153044021 is an equidigital number, since it uses as much as digits as its factorization.

133153044021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92070 (or 92061 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 133153044021 its reverse (120440351331), we get a palindrome (253593395352).

The spelling of 133153044021 in words is "one hundred thirty-three billion, one hundred fifty-three million, forty-four thousand, twenty-one".