21132232201 has 2 divisors, whose sum is σ = 21132232202. Its totient is φ = 21132232200.

The previous prime is 21132232153. The next prime is 21132232213. The reversal of 21132232201 is 10223223112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21068232201 + 64000000 = 145149^2 + 8000^2 .

It is a cyclic number.

It is not a de Polignac number, because 21132232201 - 2¹¹ = 21132230153 is a prime.

It is not a weakly prime, because it can be changed into another prime (21132232291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10566116100 + 10566116101.

It is an arithmetic number, because the mean of its divisors is an integer number (10566116101).

Almost surely, 2^21132232201 is an apocalyptic number.

It is an amenable number.

21132232201 is a deficient number, since it is larger than the sum of its proper divisors (1).

21132232201 is an equidigital number, since it uses as much as digits as its factorization.

21132232201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21132232201 its reverse (10223223112), we get a palindrome (31355455313).

The spelling of 21132232201 in words is "twenty-one billion, one hundred thirty-two million, two hundred thirty-two thousand, two hundred one".