2021223222 has 24 divisors (see below), whose sum is σ = 4380143976. Its totient is φ = 673613856.

The previous prime is 2021223131. The next prime is 2021223277. The reversal of 2021223222 is 2223221202.

It is a super-2 number, since 2×2021223222² = 8170686626304122568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2021223195 and 2021223204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 179338 + ... + 190274.

It is an arithmetic number, because the mean of its divisors is an integer number (182505999).

Almost surely, 2^2021223222 is an apocalyptic number.

2021223222 is an abundant number, since it is smaller than the sum of its proper divisors (2358920754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021223222 is a wasteful number, since it uses less digits than its factorization.

2021223222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21212 (or 21209 counting only the distinct ones).

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

The square root of 2021223222 is about 44958.0162151312. The cubic root of 2021223222 is about 1264.3619756409.

Adding to 2021223222 its reverse (2223221202), we get a palindrome (4244444424).

It can be divided in two parts, 20212 and 23222, that added together give a palindrome (43434).

The spelling of 2021223222 in words is "two billion, twenty-one million, two hundred twenty-three thousand, two hundred twenty-two".