1020021202 has 4 divisors (see below), whose sum is σ = 1530031806. Its totient is φ = 510010600.

The previous prime is 1020021187. The next prime is 1020021209. The reversal of 1020021202 is 2021200201.

1020021202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1009269361 + 10751841 = 31769^2 + 3279^2 .

It is not an unprimeable number, because it can be changed into a prime (1020021209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255005299 + ... + 255005302.

Almost surely, 2^1020021202 is an apocalyptic number.

1020021202 is a deficient number, since it is larger than the sum of its proper divisors (510010604).

1020021202 is an equidigital number, since it uses as much as digits as its factorization.

1020021202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510010603.

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

The square root of 1020021202 is about 31937.7707738032. The cubic root of 1020021202 is about 1006.6296841571.

Adding to 1020021202 its reverse (2021200201), we get a palindrome (3041221403).

The spelling of 1020021202 in words is "one billion, twenty million, twenty-one thousand, two hundred two".