20011332331 has 2 divisors, whose sum is σ = 20011332332. Its totient is φ = 20011332330.

The previous prime is 20011332301. The next prime is 20011332353. The reversal of 20011332331 is 13323311002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20011332331 - 2⁹ = 20011331819 is a prime.

It is a super-2 number, since 2×20011332331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20011332299 and 20011332308.

It is not a weakly prime, because it can be changed into another prime (20011332301) 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, 10005666165 + 10005666166.

It is an arithmetic number, because the mean of its divisors is an integer number (10005666166).

Almost surely, 2^20011332331 is an apocalyptic number.

20011332331 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011332331 is an equidigital number, since it uses as much as digits as its factorization.

20011332331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20011332331 its reverse (13323311002), we get a palindrome (33334643333).

The spelling of 20011332331 in words is "twenty billion, eleven million, three hundred thirty-two thousand, three hundred thirty-one".