21223434233371 has 2 divisors, whose sum is σ = 21223434233372. Its totient is φ = 21223434233370.

The previous prime is 21223434233363. The next prime is 21223434233423. The reversal of 21223434233371 is 17333243432212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21223434233371 - 2³ = 21223434233363 is a prime.

It is not a weakly prime, because it can be changed into another prime (21223434233471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611717116685 + 10611717116686.

It is an arithmetic number, because the mean of its divisors is an integer number (10611717116686).

Almost surely, 2^{21223434233371} is an apocalyptic number.

21223434233371 is a deficient number, since it is larger than the sum of its proper divisors (1).

21223434233371 is an equidigital number, since it uses as much as digits as its factorization.

21223434233371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 40.

Adding to 21223434233371 its reverse (17333243432212), we get a palindrome (38556677665583).

The spelling of 21223434233371 in words is "twenty-one trillion, two hundred twenty-three billion, four hundred thirty-four million, two hundred thirty-three thousand, three hundred seventy-one".