21301232231201 has 16 divisors (see below), whose sum is σ = 22953221058768. Its totient is φ = 19651165747200.

The previous prime is 21301232231183. The next prime is 21301232231261. The reversal of 21301232231201 is 10213223210312.

It can be written as a sum of positive squares in 8 ways, for example, as 10138817590801 + 11162414640400 = 3184151^2 + 3341020^2 .

It is not a de Polignac number, because 21301232231201 - 2⁶ = 21301232231137 is a prime.

It is a super-3 number, since 3×21301232231201³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21301232231261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157396175 + ... + 157531451.

It is an arithmetic number, because the mean of its divisors is an integer number (1434576316173).

Almost surely, 2^{21301232231201} is an apocalyptic number.

It is an amenable number.

21301232231201 is a deficient number, since it is larger than the sum of its proper divisors (1651988827567).

21301232231201 is a wasteful number, since it uses less digits than its factorization.

21301232231201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142292.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21301232231201 its reverse (10213223210312), we get a palindrome (31514455441513).

The spelling of 21301232231201 in words is "twenty-one trillion, three hundred one billion, two hundred thirty-two million, two hundred thirty-one thousand, two hundred one".