21011122231003 has 2 divisors, whose sum is σ = 21011122231004. Its totient is φ = 21011122231002.

The previous prime is 21011122230979. The next prime is 21011122231019. The reversal of 21011122231003 is 30013222111012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21011122231003 - 2²⁹ = 21010585360091 is a prime.

It is a super-2 number, since 2×21011122231003² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21011122231093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505561115501 + 10505561115502.

It is an arithmetic number, because the mean of its divisors is an integer number (10505561115502).

Almost surely, 2^{21011122231003} is an apocalyptic number.

21011122231003 is a deficient number, since it is larger than the sum of its proper divisors (1).

21011122231003 is an equidigital number, since it uses as much as digits as its factorization.

21011122231003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21011122231003 its reverse (30013222111012), we get a palindrome (51024344342015).

The spelling of 21011122231003 in words is "twenty-one trillion, eleven billion, one hundred twenty-two million, two hundred thirty-one thousand, three".