21403131322011 has 8 divisors (see below), whose sum is σ = 29308792441104. Its totient is φ = 13883112208800.

The previous prime is 21403131321947. The next prime is 21403131322033. The reversal of 21403131322011 is 11022313130412.

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

It is not a de Polignac number, because 21403131322011 - 2⁶ = 21403131321947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21403131322051) 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, 96410501340 + ... + 96410501561.

It is an arithmetic number, because the mean of its divisors is an integer number (3663599055138).

Almost surely, 2^{21403131322011} is an apocalyptic number.

21403131322011 is a deficient number, since it is larger than the sum of its proper divisors (7905661119093).

21403131322011 is a wasteful number, since it uses less digits than its factorization.

21403131322011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192821002941.

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

Adding to 21403131322011 its reverse (11022313130412), we get a palindrome (32425444452423).

The spelling of 21403131322011 in words is "twenty-one trillion, four hundred three billion, one hundred thirty-one million, three hundred twenty-two thousand, eleven".