21332212011311 has 4 divisors (see below), whose sum is σ = 21353737957824. Its totient is φ = 21310686064800.

The previous prime is 21332212011307. The next prime is 21332212011367. The reversal of 21332212011311 is 11311021223312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21332212011311 - 2² = 21332212011307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332212011391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10762971770 + ... + 10762973751.

It is an arithmetic number, because the mean of its divisors is an integer number (5338434489456).

Almost surely, 2^{21332212011311} is an apocalyptic number.

21332212011311 is a deficient number, since it is larger than the sum of its proper divisors (21525946513).

21332212011311 is an equidigital number, since it uses as much as digits as its factorization.

21332212011311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21525946512.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 21332212011311 its reverse (11311021223312), we get a palindrome (32643233234623).

The spelling of 21332212011311 in words is "twenty-one trillion, three hundred thirty-two billion, two hundred twelve million, eleven thousand, three hundred eleven".