21123333301 has 8 divisors (see below), whose sum is σ = 24144976064. Its totient is φ = 18102696480.

The previous prime is 21123333241. The next prime is 21123333307. The reversal of 21123333301 is 10333332112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21123333301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21123333307) 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 7 ways as a sum of consecutive naturals, for example, 205935 + ... + 290956.

It is an arithmetic number, because the mean of its divisors is an integer number (3018122008).

Almost surely, 2^21123333301 is an apocalyptic number.

It is an amenable number.

21123333301 is a deficient number, since it is larger than the sum of its proper divisors (3021642763).

21123333301 is an equidigital number, since it uses as much as digits as its factorization.

21123333301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502971.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 21123333301 its reverse (10333332112), we get a palindrome (31456665413).

The spelling of 21123333301 in words is "twenty-one billion, one hundred twenty-three million, three hundred thirty-three thousand, three hundred one".