2021220202 has 8 divisors (see below), whose sum is σ = 3210173316. Its totient is φ = 951162432.

The previous prime is 2021220193. The next prime is 2021220211. The reversal of 2021220202 is 2020221202.

It is an interprime number because it is at equal distance from previous prime (2021220193) and next prime (2021220211).

It can be written as a sum of positive squares in 2 ways, for example, as 1994604921 + 26615281 = 44661^2 + 5159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2021220202² = 8170662209945841608, which contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 29723793 + ... + 29723860.

Almost surely, 2^2021220202 is an apocalyptic number.

2021220202 is a deficient number, since it is larger than the sum of its proper divisors (1188953114).

2021220202 is a wasteful number, since it uses less digits than its factorization.

2021220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59447672.

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

The square root of 2021220202 is about 44957.9826282274. The cubic root of 2021220202 is about 1264.3613459273.

Adding to 2021220202 its reverse (2020221202), we get a palindrome (4041441404).

The spelling of 2021220202 in words is "two billion, twenty-one million, two hundred twenty thousand, two hundred two".