21311330130201 has 32 divisors (see below), whose sum is σ = 29309491935360. Its totient is φ = 13765286707200.

The previous prime is 21311330130179. The next prime is 21311330130227. The reversal of 21311330130201 is 10203103311312.

It is a happy number.

It is not a de Polignac number, because 21311330130201 - 2¹³ = 21311330122009 is a prime.

It is a super-2 number, since 2×21311330130201² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21311330130241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25430841 + ... + 26255481.

It is an arithmetic number, because the mean of its divisors is an integer number (915921622980).

Almost surely, 2^{21311330130201} is an apocalyptic number.

It is an amenable number.

21311330130201 is a deficient number, since it is larger than the sum of its proper divisors (7998161805159).

21311330130201 is a wasteful number, since it uses less digits than its factorization.

21311330130201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826137.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 21311330130201 its reverse (10203103311312), we get a palindrome (31514433441513).

The spelling of 21311330130201 in words is "twenty-one trillion, three hundred eleven billion, three hundred thirty million, one hundred thirty thousand, two hundred one".