21223211232229 has 2 divisors, whose sum is σ = 21223211232230. Its totient is φ = 21223211232228.

The previous prime is 21223211232199. The next prime is 21223211232247. The reversal of 21223211232229 is 92223211232212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20854045624129 + 369165608100 = 4566623^2 + 607590^2 .

It is a cyclic number.

It is not a de Polignac number, because 21223211232229 - 2³⁵ = 21188851493861 is a prime.

It is a super-2 number, since 2×21223211232229² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21223211232194 and 21223211232203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21223211232029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611605616114 + 10611605616115.

It is an arithmetic number, because the mean of its divisors is an integer number (10611605616115).

Almost surely, 2^{21223211232229} is an apocalyptic number.

It is an amenable number.

21223211232229 is a deficient number, since it is larger than the sum of its proper divisors (1).

21223211232229 is an equidigital number, since it uses as much as digits as its factorization.

21223211232229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The spelling of 21223211232229 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred eleven million, two hundred thirty-two thousand, two hundred twenty-nine".