21313100001211 has 8 divisors (see below), whose sum is σ = 21719933463024. Its totient is φ = 20906440595040.

The previous prime is 21313100001173. The next prime is 21313100001241. The reversal of 21313100001211 is 11210000131312.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21313100001211 - 2¹⁹ = 21313099476923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21313100001241) 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, 43266661 + ... + 43756486.

It is an arithmetic number, because the mean of its divisors is an integer number (2714991682878).

Almost surely, 2^{21313100001211} is an apocalyptic number.

21313100001211 is a deficient number, since it is larger than the sum of its proper divisors (406833461813).

21313100001211 is an equidigital number, since it uses as much as digits as its factorization.

21313100001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87027821.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 21313100001211 its reverse (11210000131312), we get a palindrome (32523100132523).

The spelling of 21313100001211 in words is "twenty-one trillion, three hundred thirteen billion, one hundred million, one thousand, two hundred eleven".