21312033301 has 8 divisors (see below), whose sum is σ = 22965778584. Its totient is φ = 19660339200.

The previous prime is 21312033257. The next prime is 21312033307. The reversal of 21312033301 is 10333021312.

It can be written as a sum of positive squares in 4 ways, for example, as 8887587076 + 12424446225 = 94274^2 + 111465^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 21312033301 - 2¹¹ = 21312031253 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 (21312033307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491176 + ... + 532801.

It is an arithmetic number, because the mean of its divisors is an integer number (2870722323).

Almost surely, 2^21312033301 is an apocalyptic number.

It is an amenable number.

21312033301 is a deficient number, since it is larger than the sum of its proper divisors (1653745283).

21312033301 is a wasteful number, since it uses less digits than its factorization.

21312033301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025591.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21312033301 its reverse (10333021312), we get a palindrome (31645054613).

The spelling of 21312033301 in words is "twenty-one billion, three hundred twelve million, thirty-three thousand, three hundred one".