21222133043 has 2 divisors, whose sum is σ = 21222133044. Its totient is φ = 21222133042.

The previous prime is 21222133019. The next prime is 21222133057. The reversal of 21222133043 is 34033122212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21222133043 - 2⁸ = 21222132787 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21222133003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611066521 + 10611066522.

It is an arithmetic number, because the mean of its divisors is an integer number (10611066522).

Almost surely, 2^21222133043 is an apocalyptic number.

21222133043 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222133043 is an equidigital number, since it uses as much as digits as its factorization.

21222133043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21222133043 its reverse (34033122212), we get a palindrome (55255255255).

The spelling of 21222133043 in words is "twenty-one billion, two hundred twenty-two million, one hundred thirty-three thousand, forty-three".