21200210323001 has 4 divisors (see below), whose sum is σ = 21717288623604. Its totient is φ = 20683132022400.

The previous prime is 21200210322989. The next prime is 21200210323009. The reversal of 21200210323001 is 10032301200212.

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 705793213225 + 20494417109776 = 840115^2 + 4527076^2 .

It is a cyclic number.

It is not a de Polignac number, because 21200210323001 - 2¹⁰ = 21200210321977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21200210323009) 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, 258539150240 + ... + 258539150321.

It is an arithmetic number, because the mean of its divisors is an integer number (5429322155901).

Almost surely, 2^{21200210323001} is an apocalyptic number.

It is an amenable number.

21200210323001 is a deficient number, since it is larger than the sum of its proper divisors (517078300603).

21200210323001 is an equidigital number, since it uses as much as digits as its factorization.

21200210323001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517078300602.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21200210323001 its reverse (10032301200212), we get a palindrome (31232511523213).

The spelling of 21200210323001 in words is "twenty-one trillion, two hundred billion, two hundred ten million, three hundred twenty-three thousand, one".