21313201121211 has 8 divisors (see below), whose sum is σ = 28433757045760. Its totient is φ = 14200722972072.

The previous prime is 21313201121209. The next prime is 21313201121237. The reversal of 21313201121211 is 11212110231312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21313201121211 - 2¹ = 21313201121209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21313201121711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2019437695 + ... + 2019448248.

It is an arithmetic number, because the mean of its divisors is an integer number (3554219630720).

Almost surely, 2^{21313201121211} is an apocalyptic number.

21313201121211 is a deficient number, since it is larger than the sum of its proper divisors (7120555924549).

21313201121211 is a wasteful number, since it uses less digits than its factorization.

21313201121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038887705.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 21313201121211 its reverse (11212110231312), we get a palindrome (32525311352523).

The spelling of 21313201121211 in words is "twenty-one trillion, three hundred thirteen billion, two hundred one million, one hundred twenty-one thousand, two hundred eleven".