21132320001031 has 2 divisors, whose sum is σ = 21132320001032. Its totient is φ = 21132320001030.

The previous prime is 21132320001029. The next prime is 21132320001041. The reversal of 21132320001031 is 13010002323112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21132320001031 - 2¹ = 21132320001029 is a prime.

It is a super-2 number, since 2×21132320001031² (a number of 27 digits) contains 22 as substring.

Together with 21132320001029, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21132320001041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10566160000515 + 10566160000516.

It is an arithmetic number, because the mean of its divisors is an integer number (10566160000516).

Almost surely, 2^{21132320001031} is an apocalyptic number.

21132320001031 is a deficient number, since it is larger than the sum of its proper divisors (1).

21132320001031 is an equidigital number, since it uses as much as digits as its factorization.

21132320001031 is an evil number, because the sum of its binary digits is even.

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

Adding to 21132320001031 its reverse (13010002323112), we get a palindrome (34142322324143).

The spelling of 21132320001031 in words is "twenty-one trillion, one hundred thirty-two billion, three hundred twenty million, one thousand, thirty-one".