1020222020 has 36 divisors (see below), whose sum is σ = 2275919940. Its totient is φ = 384081408.

The previous prime is 1020222019. The next prime is 1020222029. The reversal of 1020222020 is 202220201.

It can be written as a sum of positive squares in 6 ways, for example, as 11397376 + 1008824644 = 3376^2 + 31762^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1020221992 and 1020222010.

It is not an unprimeable number, because it can be changed into a prime (1020222029) 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, 82475 + ... + 94034.

Almost surely, 2^1020222020 is an apocalyptic number.

1020222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020222020 is an abundant number, since it is smaller than the sum of its proper divisors (1255697920).

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

1020222020 is a wasteful number, since it uses less digits than its factorization.

1020222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176552 (or 176533 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 1020222020 is about 31940.9145141463. The cubic root of 1020222020 is about 1006.6957403315.

Adding to 1020222020 its reverse (202220201), we get a palindrome (1222442221).

The spelling of 1020222020 in words is "one billion, twenty million, two hundred twenty-two thousand, twenty".