21031030302041 has 2 divisors, whose sum is σ = 21031030302042. Its totient is φ = 21031030302040.

The previous prime is 21031030301987. The next prime is 21031030302049. The reversal of 21031030302041 is 14020303013012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12016594518016 + 9014435784025 = 3466496^2 + 3002405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21031030302041 is a prime.

It is not a weakly prime, because it can be changed into another prime (21031030302049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10515515151020 + 10515515151021.

It is an arithmetic number, because the mean of its divisors is an integer number (10515515151021).

Almost surely, 2^{21031030302041} is an apocalyptic number.

It is an amenable number.

21031030302041 is a deficient number, since it is larger than the sum of its proper divisors (1).

21031030302041 is an equidigital number, since it uses as much as digits as its factorization.

21031030302041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21031030302041 its reverse (14020303013012), we get a palindrome (35051333315053).

The spelling of 21031030302041 in words is "twenty-one trillion, thirty-one billion, thirty million, three hundred two thousand, forty-one".