2021222223 has 24 divisors (see below), whose sum is σ = 3148170480. Its totient is φ = 1245421440.

The previous prime is 2021222197. The next prime is 2021222237. The reversal of 2021222223 is 3222221202.

It is not a de Polignac number, because 2021222223 - 2⁹ = 2021221711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021222196 and 2021222205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021222323) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 137136 + ... + 151157.

It is an arithmetic number, because the mean of its divisors is an integer number (131173770).

Almost surely, 2^2021222223 is an apocalyptic number.

2021222223 is a deficient number, since it is larger than the sum of its proper divisors (1126948257).

2021222223 is a wasteful number, since it uses less digits than its factorization.

2021222223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288359 (or 288356 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2021222223 is about 44958.0051047642. The cubic root of 2021222223 is about 1264.3617673350.

Adding to 2021222223 its reverse (3222221202), we get a palindrome (5243443425).

The spelling of 2021222223 in words is "two billion, twenty-one million, two hundred twenty-two thousand, two hundred twenty-three".