1021056916 has 24 divisors (see below), whose sum is σ = 1967517216. Its totient is φ = 459777120.

The previous prime is 1021056901. The next prime is 1021056931. The reversal of 1021056916 is 6196501201.

It is an interprime number because it is at equal distance from previous prime (1021056901) and next prime (1021056931).

It is a super-2 number, since 2×1021056916² = 2085114451422862112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103731 + ... + 113146.

It is an arithmetic number, because the mean of its divisors is an integer number (81979884).

Almost surely, 2^1021056916 is an apocalyptic number.

It is an amenable number.

1021056916 is a deficient number, since it is larger than the sum of its proper divisors (946460300).

1021056916 is a wasteful number, since it uses less digits than its factorization.

1021056916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216999 (or 216997 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 1021056916 is about 31953.9812230026. The cubic root of 1021056916 is about 1006.9702743919.

The spelling of 1021056916 in words is "one billion, twenty-one million, fifty-six thousand, nine hundred sixteen".