21123321200301 has 4 divisors (see below), whose sum is σ = 28164428267072. Its totient is φ = 14082214133532.

The previous prime is 21123321200299. The next prime is 21123321200381. The reversal of 21123321200301 is 10300212332112.

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 not a de Polignac number, because 21123321200301 - 2¹ = 21123321200299 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21123321200381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3520553533381 + ... + 3520553533386.

It is an arithmetic number, because the mean of its divisors is an integer number (7041107066768).

Almost surely, 2^{21123321200301} is an apocalyptic number.

It is an amenable number.

21123321200301 is a deficient number, since it is larger than the sum of its proper divisors (7041107066771).

21123321200301 is an equidigital number, since it uses as much as digits as its factorization.

21123321200301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7041107066770.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21123321200301 its reverse (10300212332112), we get a palindrome (31423533532413).

The spelling of 21123321200301 in words is "twenty-one trillion, one hundred twenty-three billion, three hundred twenty-one million, two hundred thousand, three hundred one".