1010867021 has 2 divisors, whose sum is σ = 1010867022. Its totient is φ = 1010867020.

The previous prime is 1010866993. The next prime is 1010867027. The reversal of 1010867021 is 1207680101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 936666025 + 74200996 = 30605^2 + 8614^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010867021 - 2²⁶ = 943758157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1010867027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505433510 + 505433511.

It is an arithmetic number, because the mean of its divisors is an integer number (505433511).

Almost surely, 2^1010867021 is an apocalyptic number.

It is an amenable number.

1010867021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010867021 is an equidigital number, since it uses as much as digits as its factorization.

1010867021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 1010867021 is about 31794.1350094636. The cubic root of 1010867021 is about 1003.6092976311.

The spelling of 1010867021 in words is "one billion, ten million, eight hundred sixty-seven thousand, twenty-one".