21232162311 has 4 divisors (see below), whose sum is σ = 28309549752. Its totient is φ = 14154774872.

The previous prime is 21232162309. The next prime is 21232162327. The reversal of 21232162311 is 11326123212.

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 21232162311 - 2¹ = 21232162309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232162111) 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, 3538693716 + ... + 3538693721.

It is an arithmetic number, because the mean of its divisors is an integer number (7077387438).

Almost surely, 2^21232162311 is an apocalyptic number.

21232162311 is a deficient number, since it is larger than the sum of its proper divisors (7077387441).

21232162311 is an equidigital number, since it uses as much as digits as its factorization.

21232162311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7077387440.

The product of its digits is 864, while the sum is 24.

Adding to 21232162311 its reverse (11326123212), we get a palindrome (32558285523).

The spelling of 21232162311 in words is "twenty-one billion, two hundred thirty-two million, one hundred sixty-two thousand, three hundred eleven".