21133123233001 has 8 divisors (see below), whose sum is σ = 22759003205960. Its totient is φ = 19507279704192.

The previous prime is 21133123232957. The next prime is 21133123233011. The reversal of 21133123233001 is 10033232133112.

It can be written as a sum of positive squares in 4 ways, for example, as 6887790291600 + 14245332941401 = 2624460^2 + 3774299^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21133123233001 - 2⁹ = 21133123232489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21133123233011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7900716 + ... + 10231693.

It is an arithmetic number, because the mean of its divisors is an integer number (2844875400745).

Almost surely, 2^{21133123233001} is an apocalyptic number.

It is an amenable number.

21133123233001 is a deficient number, since it is larger than the sum of its proper divisors (1625879972959).

21133123233001 is a wasteful number, since it uses less digits than its factorization.

21133123233001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18222075.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 21133123233001 its reverse (10033232133112), we get a palindrome (31166355366113).

The spelling of 21133123233001 in words is "twenty-one trillion, one hundred thirty-three billion, one hundred twenty-three million, two hundred thirty-three thousand, one".