21010133333201 has 4 divisors (see below), whose sum is σ = 21018350048052. Its totient is φ = 21001916618352.

The previous prime is 21010133333177. The next prime is 21010133333249. The reversal of 21010133333201 is 10233333101012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5156986810000 + 15853146523201 = 2270900^2 + 3981601^2 .

It is a cyclic number.

It is not a de Polignac number, because 21010133333201 - 2¹⁴ = 21010133316817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21010133363201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4108353590 + ... + 4108358703.

It is an arithmetic number, because the mean of its divisors is an integer number (5254587512013).

Almost surely, 2^{21010133333201} is an apocalyptic number.

It is an amenable number.

21010133333201 is a deficient number, since it is larger than the sum of its proper divisors (8216714851).

21010133333201 is an equidigital number, since it uses as much as digits as its factorization.

21010133333201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8216714850.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 21010133333201 its reverse (10233333101012), we get a palindrome (31243466434213).

The spelling of 21010133333201 in words is "twenty-one trillion, ten billion, one hundred thirty-three million, three hundred thirty-three thousand, two hundred one".