21031223301 has 24 divisors (see below), whose sum is σ = 33244701984. Its totient is φ = 12705968160.

The previous prime is 21031223281. The next prime is 21031223321. The reversal of 21031223301 is 10332213012.

21031223301 is a `hidden beast` number, since 21 + 0 + 312 + 2 + 330 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (21031223281) and next prime (21031223321).

It is not a de Polignac number, because 21031223301 - 2⁶ = 21031223237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21031223321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 303691 + ... + 366456.

It is an arithmetic number, because the mean of its divisors is an integer number (1385195916).

Almost surely, 2^21031223301 is an apocalyptic number.

It is an amenable number.

21031223301 is a deficient number, since it is larger than the sum of its proper divisors (12213478683).

21031223301 is a wasteful number, since it uses less digits than its factorization.

21031223301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670481 (or 670478 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21031223301 its reverse (10332213012), we get a palindrome (31363436313).

The spelling of 21031223301 in words is "twenty-one billion, thirty-one million, two hundred twenty-three thousand, three hundred one".