21320225640231 has 48 divisors (see below), whose sum is σ = 34138516958208. Its totient is φ = 11788708982400.

The previous prime is 21320225640211. The next prime is 21320225640313. The reversal of 21320225640231 is 13204652202312.

It is not a de Polignac number, because 21320225640231 - 2¹³ = 21320225632039 is a prime.

It is a super-2 number, since 2×21320225640231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21320225640192 and 21320225640201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21320225640211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42600691 + ... + 43098251.

It is an arithmetic number, because the mean of its divisors is an integer number (711219103296).

Almost surely, 2^{21320225640231} is an apocalyptic number.

21320225640231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21320225640231 is a deficient number, since it is larger than the sum of its proper divisors (12818291317977).

21320225640231 is a wasteful number, since it uses less digits than its factorization.

21320225640231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507012 (or 507005 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 21320225640231 its reverse (13204652202312), we get a palindrome (34524877842543).

The spelling of 21320225640231 in words is "twenty-one trillion, three hundred twenty billion, two hundred twenty-five million, six hundred forty thousand, two hundred thirty-one".