21132023311 has 16 divisors (see below), whose sum is σ = 25356579840. Its totient is φ = 17227536480.

The previous prime is 21132023309. The next prime is 21132023327. The reversal of 21132023311 is 11332023112.

It is not a de Polignac number, because 21132023311 - 2¹ = 21132023309 is a prime.

It is a super-3 number, since 3×21132023311³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132023351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 763255 + ... + 790456.

It is an arithmetic number, because the mean of its divisors is an integer number (1584786240).

Almost surely, 2^21132023311 is an apocalyptic number.

21132023311 is a deficient number, since it is larger than the sum of its proper divisors (4224556529).

21132023311 is a wasteful number, since it uses less digits than its factorization.

21132023311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553814.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21132023311 its reverse (11332023112), we get a palindrome (32464046423).

The spelling of 21132023311 in words is "twenty-one billion, one hundred thirty-two million, twenty-three thousand, three hundred eleven".