21200011032331 has 2 divisors, whose sum is σ = 21200011032332. Its totient is φ = 21200011032330.

The previous prime is 21200011032311. The next prime is 21200011032341. The reversal of 21200011032331 is 13323011000212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21200011032331 is a prime.

It is a super-2 number, since 2×21200011032331² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21200011032299 and 21200011032308.

It is not a weakly prime, because it can be changed into another prime (21200011032311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600005516165 + 10600005516166.

It is an arithmetic number, because the mean of its divisors is an integer number (10600005516166).

Almost surely, 2^{21200011032331} is an apocalyptic number.

21200011032331 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200011032331 is an equidigital number, since it uses as much as digits as its factorization.

21200011032331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21200011032331 its reverse (13323011000212), we get a palindrome (34523022032543).

The spelling of 21200011032331 in words is "twenty-one trillion, two hundred billion, eleven million, thirty-two thousand, three hundred thirty-one".