1012221016 has 16 divisors (see below), whose sum is σ = 1906912440. Its totient is φ = 503711040.

The previous prime is 1012221013. The next prime is 1012221031. The reversal of 1012221016 is 6101222101.

It is a super-3 number, since 3×1012221016³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012221013) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 298141 + ... + 301516.

Almost surely, 2^1012221016 is an apocalyptic number.

It is an amenable number.

1012221016 is a deficient number, since it is larger than the sum of its proper divisors (894691424).

1012221016 is a wasteful number, since it uses less digits than its factorization.

1012221016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599874 (or 599870 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1012221016 is about 31815.4210407469. The cubic root of 1012221016 is about 1004.0571889563.

Adding to 1012221016 its reverse (6101222101), we get a palindrome (7113443117).

The spelling of 1012221016 in words is "one billion, twelve million, two hundred twenty-one thousand, sixteen".