21333330021131 has 2 divisors, whose sum is σ = 21333330021132. Its totient is φ = 21333330021130.

The previous prime is 21333330021089. The next prime is 21333330021137. The reversal of 21333330021131 is 13112003333312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21333330021131 - 2¹⁸ = 21333329758987 is a prime.

It is a super-2 number, since 2×21333330021131² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21333330021131.

It is not a weakly prime, because it can be changed into another prime (21333330021137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666665010565 + 10666665010566.

It is an arithmetic number, because the mean of its divisors is an integer number (10666665010566).

Almost surely, 2^{21333330021131} is an apocalyptic number.

21333330021131 is a deficient number, since it is larger than the sum of its proper divisors (1).

21333330021131 is an equidigital number, since it uses as much as digits as its factorization.

21333330021131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 21333330021131 its reverse (13112003333312), we get a palindrome (34445333354443).

The spelling of 21333330021131 in words is "twenty-one trillion, three hundred thirty-three billion, three hundred thirty million, twenty-one thousand, one hundred thirty-one".