1016021216 has 48 divisors (see below), whose sum is σ = 2308733280. Its totient is φ = 431116800.

The previous prime is 1016021207. The next prime is 1016021233. The reversal of 1016021216 is 6121206101.

It is a super-2 number, since 2×1016021216² = 2064598222724237312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170 + ... + 45078.

It is an arithmetic number, because the mean of its divisors is an integer number (48098610).

Almost surely, 2^1016021216 is an apocalyptic number.

1016021216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1016021216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1154366640).

1016021216 is an abundant number, since it is smaller than the sum of its proper divisors (1292712064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1016021216 is a wasteful number, since it uses less digits than its factorization.

1016021216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45027 (or 45019 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1016021216 is about 31875.0877018401. The cubic root of 1016021216 is about 1005.3121365710.

Adding to 1016021216 its reverse (6121206101), we get a palindrome (7137227317).

The spelling of 1016021216 in words is "one billion, sixteen million, twenty-one thousand, two hundred sixteen".