21303233301 has 32 divisors (see below), whose sum is σ = 33310199808. Its totient is φ = 11857688640.

The previous prime is 21303233291. The next prime is 21303233311. The reversal of 21303233301 is 10333230312.

It is an interprime number because it is at equal distance from previous prime (21303233291) and next prime (21303233311).

It is not a de Polignac number, because 21303233301 - 2¹⁰ = 21303232277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303233311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157111 + ... + 259403.

It is an arithmetic number, because the mean of its divisors is an integer number (1040943744).

Almost surely, 2^21303233301 is an apocalyptic number.

21303233301 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21303233301 is a deficient number, since it is larger than the sum of its proper divisors (12006966507).

21303233301 is a wasteful number, since it uses less digits than its factorization.

21303233301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102561.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 21303233301 its reverse (10333230312), we get a palindrome (31636463613).

The spelling of 21303233301 in words is "twenty-one billion, three hundred three million, two hundred thirty-three thousand, three hundred one".