1020161322 has 24 divisors (see below), whose sum is σ = 2212184676. Its totient is φ = 339771456.

The previous prime is 1020161309. The next prime is 1020161323. The reversal of 1020161322 is 2231610201.

1020161322 is a `hidden beast` number, since 10 + 20 + 1 + 613 + 22 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 895146561 + 125014761 = 29919^2 + 11181^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1020161295 and 1020161304.

It is not an unprimeable number, because it can be changed into a prime (1020161323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 643 + ... + 45174.

Almost surely, 2^1020161322 is an apocalyptic number.

1020161322 is an abundant number, since it is smaller than the sum of its proper divisors (1192023354).

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

1020161322 is a wasteful number, since it uses less digits than its factorization.

1020161322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47062 (or 47059 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1020161322 is about 31939.9643393664. The cubic root of 1020161322 is about 1006.6757755171.

Adding to 1020161322 its reverse (2231610201), we get a palindrome (3251771523).

The spelling of 1020161322 in words is "one billion, twenty million, one hundred sixty-one thousand, three hundred twenty-two".