1021011016 has 8 divisors (see below), whose sum is σ = 1914395670. Its totient is φ = 510505504.

The previous prime is 1021011011. The next prime is 1021011031. The reversal of 1021011016 is 6101101201.

1021011016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 766736100 + 254274916 = 27690^2 + 15946^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×1021011016³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021010987 and 1021011005.

It is not an unprimeable number, because it can be changed into a prime (1021011011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63813181 + ... + 63813196.

Almost surely, 2^1021011016 is an apocalyptic number.

It is an amenable number.

1021011016 is a deficient number, since it is larger than the sum of its proper divisors (893384654).

1021011016 is a wasteful number, since it uses less digits than its factorization.

1021011016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127626383 (or 127626379 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1021011016 is about 31953.2629945676. The cubic root of 1021011016 is about 1006.9551852467.

Adding to 1021011016 its reverse (6101101201), we get a palindrome (7122112217).

The spelling of 1021011016 in words is "one billion, twenty-one million, eleven thousand, sixteen".