21023213331301 has 16 divisors (see below), whose sum is σ = 21102559985520. Its totient is φ = 20944008317440.

The previous prime is 21023213331299. The next prime is 21023213331331. The reversal of 21023213331301 is 10313331232012.

It can be written as a sum of positive squares in 8 ways, for example, as 4714934532100 + 16308278799201 = 2171390^2 + 4038351^2 .

It is a cyclic number.

It is not a de Polignac number, because 21023213331301 - 2¹ = 21023213331299 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 (21023213331331) 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 15 ways as a sum of consecutive naturals, for example, 2552285955 + ... + 2552294191.

It is an arithmetic number, because the mean of its divisors is an integer number (1318909999095).

Almost surely, 2^{21023213331301} is an apocalyptic number.

It is an amenable number.

21023213331301 is a deficient number, since it is larger than the sum of its proper divisors (79346654219).

21023213331301 is a wasteful number, since it uses less digits than its factorization.

21023213331301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15704.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 21023213331301 its reverse (10313331232012), we get a palindrome (31336544563313).

The spelling of 21023213331301 in words is "twenty-one trillion, twenty-three billion, two hundred thirteen million, three hundred thirty-one thousand, three hundred one".