2221211231023 has 2 divisors, whose sum is σ = 2221211231024. Its totient is φ = 2221211231022.

The previous prime is 2221211230963. The next prime is 2221211231033. The reversal of 2221211231023 is 3201321121222.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221211231023 is a prime.

It is a super-2 number, since 2×2221211231023² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2221211230985 and 2221211231003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221211231033) 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, 1110605615511 + 1110605615512.

It is an arithmetic number, because the mean of its divisors is an integer number (1110605615512).

Almost surely, 2^{2221211231023} is an apocalyptic number.

2221211231023 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221211231023 is an equidigital number, since it uses as much as digits as its factorization.

2221211231023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 2221211231023 its reverse (3201321121222), we get a palindrome (5422532352245).

The spelling of 2221211231023 in words is "two trillion, two hundred twenty-one billion, two hundred eleven million, two hundred thirty-one thousand, twenty-three".