2223222021 has 24 divisors (see below), whose sum is σ = 3360389760. Its totient is φ = 1413710496.

The previous prime is 2223222019. The next prime is 2223222049. The reversal of 2223222021 is 1202223222.

It is not a de Polignac number, because 2223222021 - 2¹ = 2223222019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2223221985 and 2223222003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223222721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59355 + ... + 89271.

It is an arithmetic number, because the mean of its divisors is an integer number (140016240).

Almost surely, 2^2223222021 is an apocalyptic number.

It is an amenable number.

2223222021 is a deficient number, since it is larger than the sum of its proper divisors (1137167739).

2223222021 is a wasteful number, since it uses less digits than its factorization.

2223222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30305 (or 30302 counting only the distinct ones).

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

The square root of 2223222021 is about 47151.0553540427. The cubic root of 2223222021 is about 1305.1515550414.

Adding to 2223222021 its reverse (1202223222), we get a palindrome (3425445243).

It can be divided in two parts, 22232 and 22021, that added together give a triangular number (44253 = T₂₉₇).

The spelling of 2223222021 in words is "two billion, two hundred twenty-three million, two hundred twenty-two thousand, twenty-one".