1021013069 has 2 divisors, whose sum is σ = 1021013070. Its totient is φ = 1021013068.

The previous prime is 1021013023. The next prime is 1021013087. The reversal of 1021013069 is 9603101201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 862127044 + 158886025 = 29362^2 + 12605^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021013069 - 2⁸ = 1021012813 is a prime.

It is a super-2 number, since 2×1021013069² = 2084935374137597522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021013009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510506534 + 510506535.

It is an arithmetic number, because the mean of its divisors is an integer number (510506535).

Almost surely, 2^1021013069 is an apocalyptic number.

It is an amenable number.

1021013069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021013069 is an equidigital number, since it uses as much as digits as its factorization.

1021013069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1021013069 is about 31953.2951195960. The cubic root of 1021013069 is about 1006.9558601587.

The spelling of 1021013069 in words is "one billion, twenty-one million, thirteen thousand, sixty-nine".