411243031021 has 2 divisors, whose sum is σ = 411243031022. Its totient is φ = 411243031020.

The previous prime is 411243031019. The next prime is 411243031093. The reversal of 411243031021 is 120130342114.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207471140100 + 203771890921 = 455490^2 + 451411^2 .

It is a cyclic number.

It is not a de Polignac number, because 411243031021 - 2¹ = 411243031019 is a prime.

Together with 411243031019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 411243030983 and 411243031001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (411243031621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205621515510 + 205621515511.

It is an arithmetic number, because the mean of its divisors is an integer number (205621515511).

Almost surely, 2^411243031021 is an apocalyptic number.

It is an amenable number.

411243031021 is a deficient number, since it is larger than the sum of its proper divisors (1).

411243031021 is an equidigital number, since it uses as much as digits as its factorization.

411243031021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 411243031021 its reverse (120130342114), we get a palindrome (531373373135).

The spelling of 411243031021 in words is "four hundred eleven billion, two hundred forty-three million, thirty-one thousand, twenty-one".