21232234031101 has 2 divisors, whose sum is σ = 21232234031102. Its totient is φ = 21232234031100.

The previous prime is 21232234031093. The next prime is 21232234031149. The reversal of 21232234031101 is 10113043223212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17062674228601 + 4169559802500 = 4130699^2 + 2041950^2 .

It is a cyclic number.

It is not a de Polignac number, because 21232234031101 - 2³ = 21232234031093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21232234031161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616117015550 + 10616117015551.

It is an arithmetic number, because the mean of its divisors is an integer number (10616117015551).

Almost surely, 2^{21232234031101} is an apocalyptic number.

It is an amenable number.

21232234031101 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232234031101 is an equidigital number, since it uses as much as digits as its factorization.

21232234031101 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 25.

Adding to 21232234031101 its reverse (10113043223212), we get a palindrome (31345277254313).

The spelling of 21232234031101 in words is "twenty-one trillion, two hundred thirty-two billion, two hundred thirty-four million, thirty-one thousand, one hundred one".