1016108021 has 2 divisors, whose sum is σ = 1016108022. Its totient is φ = 1016108020.

The previous prime is 1016107943. The next prime is 1016108057. The reversal of 1016108021 is 1208016101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 565012900 + 451095121 = 23770^2 + 21239^2 .

It is a cyclic number.

It is not a de Polignac number, because 1016108021 - 2¹⁰ = 1016106997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1016107984 and 1016108002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1016108221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 508054010 + 508054011.

It is an arithmetic number, because the mean of its divisors is an integer number (508054011).

Almost surely, 2^1016108021 is an apocalyptic number.

It is an amenable number.

1016108021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1016108021 is an equidigital number, since it uses as much as digits as its factorization.

1016108021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 20.

The square root of 1016108021 is about 31876.4493160703. The cubic root of 1016108021 is about 1005.3407657747.

The spelling of 1016108021 in words is "one billion, sixteen million, one hundred eight thousand, twenty-one".