21132311222031 has 8 divisors (see below), whose sum is σ = 28179859966080. Its totient is φ = 14086484979672.

The previous prime is 21132311222023. The next prime is 21132311222059. The reversal of 21132311222031 is 13022211323112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21132311222031 - 2³ = 21132311222023 is a prime.

It is a super-2 number, since 2×21132311222031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21132311221992 and 21132311222010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132311222131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430596795 + ... + 430645868.

It is an arithmetic number, because the mean of its divisors is an integer number (3522482495760).

Almost surely, 2^{21132311222031} is an apocalyptic number.

21132311222031 is a deficient number, since it is larger than the sum of its proper divisors (7047548744049).

21132311222031 is an equidigital number, since it uses as much as digits as its factorization.

21132311222031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861250845.

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

Adding to 21132311222031 its reverse (13022211323112), we get a palindrome (34154522545143).

The spelling of 21132311222031 in words is "twenty-one trillion, one hundred thirty-two billion, three hundred eleven million, two hundred twenty-two thousand, thirty-one".