1022120145 has 12 divisors (see below), whose sum is σ = 1771674996. Its totient is φ = 545130720.

The previous prime is 1022120129. The next prime is 1022120149. The reversal of 1022120145 is 5410212201.

1022120145 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 2 ways, for example, as 577585089 + 444535056 = 24033^2 + 21084^2 .

It is not a de Polignac number, because 1022120145 - 2⁴ = 1022120129 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1022120149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11356846 + ... + 11356935.

It is an arithmetic number, because the mean of its divisors is an integer number (147639583).

Almost surely, 2^1022120145 is an apocalyptic number.

1022120145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1022120145 is a deficient number, since it is larger than the sum of its proper divisors (749554851).

1022120145 is a wasteful number, since it uses less digits than its factorization.

1022120145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22713792 (or 22713789 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1022120145 is about 31970.6137726507. The cubic root of 1022120145 is about 1007.3196733255.

Adding to 1022120145 its reverse (5410212201), we get a palindrome (6432332346).

The spelling of 1022120145 in words is "one billion, twenty-two million, one hundred twenty thousand, one hundred forty-five".