2021210222 has 4 divisors (see below), whose sum is σ = 3031815336. Its totient is φ = 1010605110.

The previous prime is 2021210221. The next prime is 2021210237. The reversal of 2021210222 is 2220121202.

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

It is a junction number, because it is equal to n+sod(n) for n = 2021210197 and 2021210206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021210221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505302554 + ... + 505302557.

It is an arithmetic number, because the mean of its divisors is an integer number (757953834).

Almost surely, 2^2021210222 is an apocalyptic number.

2021210222 is a deficient number, since it is larger than the sum of its proper divisors (1010605114).

2021210222 is a wasteful number, since it uses less digits than its factorization.

2021210222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010605113.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2021210222 is about 44957.8716355657. The cubic root of 2021210222 is about 1264.3592649489.

Adding to 2021210222 its reverse (2220121202), we get a palindrome (4241331424).

The spelling of 2021210222 in words is "two billion, twenty-one million, two hundred ten thousand, two hundred twenty-two".