83701036021 has 2 divisors, whose sum is σ = 83701036022. Its totient is φ = 83701036020.

The previous prime is 83701036007. The next prime is 83701036039. The reversal of 83701036021 is 12063010738.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62957835396 + 20743200625 = 250914^2 + 144025^2 .

It is a cyclic number.

It is not a de Polignac number, because 83701036021 - 2¹⁹ = 83700511733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83701036061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41850518010 + 41850518011.

It is an arithmetic number, because the mean of its divisors is an integer number (41850518011).

Almost surely, 2^83701036021 is an apocalyptic number.

It is an amenable number.

83701036021 is a deficient number, since it is larger than the sum of its proper divisors (1).

83701036021 is an equidigital number, since it uses as much as digits as its factorization.

83701036021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

Adding to 83701036021 its reverse (12063010738), we get a palindrome (95764046759).

The spelling of 83701036021 in words is "eighty-three billion, seven hundred one million, thirty-six thousand, twenty-one".