1021331118 has 16 divisors (see below), whose sum is σ = 2068519680. Its totient is φ = 336134136.

The previous prime is 1021331093. The next prime is 1021331119. The reversal of 1021331118 is 8111331201.

It is a happy number.

1021331118 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1021331094 and 1021331103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021331119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1076880 + ... + 1077827.

It is an arithmetic number, because the mean of its divisors is an integer number (129282480).

Almost surely, 2^1021331118 is an apocalyptic number.

1021331118 is an abundant number, since it is smaller than the sum of its proper divisors (1047188562).

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

1021331118 is a wasteful number, since it uses less digits than its factorization.

1021331118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154791.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 1021331118 is about 31958.2715114569. The cubic root of 1021331118 is about 1007.0604060147.

Adding to 1021331118 its reverse (8111331201), we get a palindrome (9132662319).

The spelling of 1021331118 in words is "one billion, twenty-one million, three hundred thirty-one thousand, one hundred eighteen".