1020122020 has 24 divisors (see below), whose sum is σ = 2147221944. Its totient is φ = 407102976.

The previous prime is 1020122003. The next prime is 1020122029. The reversal of 1020122020 is 202210201.

It can be written as a sum of positive squares in 4 ways, for example, as 67535524 + 952586496 = 8218^2 + 30864^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1020121988 and 1020122006.

It is not an unprimeable number, because it can be changed into a prime (1020122029) 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 7 ways as a sum of consecutive naturals, for example, 50239 + ... + 67558.

It is an arithmetic number, because the mean of its divisors is an integer number (89467581).

Almost surely, 2^1020122020 is an apocalyptic number.

1020122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020122020 is an abundant number, since it is smaller than the sum of its proper divisors (1127099924).

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

1020122020 is a wasteful number, since it uses less digits than its factorization.

1020122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118239 (or 118237 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1020122020 is about 31939.3490854150. The cubic root of 1020122020 is about 1006.6628478626.

Adding to 1020122020 its reverse (202210201), we get a palindrome (1222332221).

The spelling of 1020122020 in words is "one billion, twenty million, one hundred twenty-two thousand, twenty".