21301020232331 has 24 divisors (see below), whose sum is σ = 24837886304784. Its totient is φ = 18214440814080.

The previous prime is 21301020232321. The next prime is 21301020232339. The reversal of 21301020232331 is 13323202010312.

It is not a de Polignac number, because 21301020232331 - 2⁶ = 21301020232267 is a prime.

It is a super-2 number, since 2×21301020232331² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21301020232297 and 21301020232306.

It is not an unprimeable number, because it can be changed into a prime (21301020232339) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 347100656 + ... + 347162018.

It is an arithmetic number, because the mean of its divisors is an integer number (1034911929366).

Almost surely, 2^{21301020232331} is an apocalyptic number.

21301020232331 is a deficient number, since it is larger than the sum of its proper divisors (3536866072453).

21301020232331 is a wasteful number, since it uses less digits than its factorization.

21301020232331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78171 (or 78164 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21301020232331 its reverse (13323202010312), we get a palindrome (34624222242643).

The spelling of 21301020232331 in words is "twenty-one trillion, three hundred one billion, twenty million, two hundred thirty-two thousand, three hundred thirty-one".