21321101301211 has 16 divisors (see below), whose sum is σ = 22675347256320. Its totient is φ = 19977978302080.

The previous prime is 21321101301169. The next prime is 21321101301257. The reversal of 21321101301211 is 11210310112312.

It is not a de Polignac number, because 21321101301211 - 2⁹ = 21321101300699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21321101304211) 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, 260484030 + ... + 260565868.

It is an arithmetic number, because the mean of its divisors is an integer number (1417209203520).

Almost surely, 2^{21321101301211} is an apocalyptic number.

21321101301211 is a deficient number, since it is larger than the sum of its proper divisors (1354245955109).

21321101301211 is a wasteful number, since it uses less digits than its factorization.

21321101301211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149594.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 21321101301211 its reverse (11210310112312), we get a palindrome (32531411413523).

The spelling of 21321101301211 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred one million, three hundred one thousand, two hundred eleven".