21322211211231 has 32 divisors (see below), whose sum is σ = 32954464051200. Its totient is φ = 12010378366560.

The previous prime is 21322211211209. The next prime is 21322211211233. The reversal of 21322211211231 is 13211211222312.

It is not a de Polignac number, because 21322211211231 - 2³⁵ = 21287851472863 is a prime.

It is a super-2 number, since 2×21322211211231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322211211233) 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, 7139740 + ... + 9675758.

It is an arithmetic number, because the mean of its divisors is an integer number (1029827001600).

Almost surely, 2^{21322211211231} is an apocalyptic number.

21322211211231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21322211211231 is a deficient number, since it is larger than the sum of its proper divisors (11632252839969).

21322211211231 is a wasteful number, since it uses less digits than its factorization.

21322211211231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541739.

The product of its digits is 576, while the sum is 24.

Adding to 21322211211231 its reverse (13211211222312), we get a palindrome (34533422433543).

The spelling of 21322211211231 in words is "twenty-one trillion, three hundred twenty-two billion, two hundred eleven million, two hundred eleven thousand, two hundred thirty-one".