1020220004 has 12 divisors (see below), whose sum is σ = 1803791724. Its totient is φ = 504850944.

The previous prime is 1020220001. The next prime is 1020220043. The reversal of 1020220004 is 4000220201.

It can be written as a sum of positive squares in 2 ways, for example, as 216384100 + 803835904 = 14710^2 + 28352^2 .

It is not an unprimeable number, because it can be changed into a prime (1020220001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1314329 + ... + 1315104.

It is an arithmetic number, because the mean of its divisors is an integer number (150315977).

Almost surely, 2^1020220004 is an apocalyptic number.

It is an amenable number.

1020220004 is a deficient number, since it is larger than the sum of its proper divisors (783571720).

1020220004 is a wasteful number, since it uses less digits than its factorization.

1020220004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2629534 (or 2629532 counting only the distinct ones).

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

The square root of 1020220004 is about 31940.8829558608. The cubic root of 1020220004 is about 1006.6950772406.

Adding to 1020220004 its reverse (4000220201), we get a palindrome (5020440205).

The spelling of 1020220004 in words is "one billion, twenty million, two hundred twenty thousand, four".