321101342021 has 2 divisors, whose sum is σ = 321101342022. Its totient is φ = 321101342020.

The previous prime is 321101341997. The next prime is 321101342101. The reversal of 321101342021 is 120243101123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177903429796 + 143197912225 = 421786^2 + 378415^2 .

It is a cyclic number.

It is not a de Polignac number, because 321101342021 - 2¹⁴ = 321101325637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321101341984 and 321101342002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321101342921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160550671010 + 160550671011.

It is an arithmetic number, because the mean of its divisors is an integer number (160550671011).

Almost surely, 2^321101342021 is an apocalyptic number.

It is an amenable number.

321101342021 is a deficient number, since it is larger than the sum of its proper divisors (1).

321101342021 is an equidigital number, since it uses as much as digits as its factorization.

321101342021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 321101342021 its reverse (120243101123), we get a palindrome (441344443144).

The spelling of 321101342021 in words is "three hundred twenty-one billion, one hundred one million, three hundred forty-two thousand, twenty-one".