201333100021 has 4 divisors (see below), whose sum is σ = 201336449344. Its totient is φ = 201329750700.

The previous prime is 201333099977. The next prime is 201333100063. The reversal of 201333100021 is 120001333102.

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 a cyclic number.

It is not a de Polignac number, because 201333100021 - 2⁷ = 201333099893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201333099968 and 201333100004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201333100121) 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, 1582815 + ... + 1705276.

It is an arithmetic number, because the mean of its divisors is an integer number (50334112336).

Almost surely, 2^201333100021 is an apocalyptic number.

It is an amenable number.

201333100021 is a deficient number, since it is larger than the sum of its proper divisors (3349323).

201333100021 is an equidigital number, since it uses as much as digits as its factorization.

201333100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3349322.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 201333100021 its reverse (120001333102), we get a palindrome (321334433123).

The spelling of 201333100021 in words is "two hundred one billion, three hundred thirty-three million, one hundred thousand, twenty-one".