2021022202 has 4 divisors (see below), whose sum is σ = 3031533306. Its totient is φ = 1010511100.

The previous prime is 2021022197. The next prime is 2021022217. The reversal of 2021022202 is 2022201202.

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., 1169024481 + 851997721 = 34191^2 + 29189^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505255549 + ... + 505255552.

Almost surely, 2^2021022202 is an apocalyptic number.

2021022202 is a deficient number, since it is larger than the sum of its proper divisors (1010511104).

2021022202 is a wasteful number, since it uses less digits than its factorization.

2021022202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010511103.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 2021022202 is about 44955.7805181937. The cubic root of 2021022202 is about 1264.3200587020.

Adding to 2021022202 its reverse (2022201202), we get a palindrome (4043223404).

It can be divided in two parts, 202102 and 2202, that added together give a square (204304 = 452²).

The spelling of 2021022202 in words is "two billion, twenty-one million, twenty-two thousand, two hundred two".