2021021222 has 16 divisors (see below), whose sum is σ = 3481185600. Its totient is φ = 870296040.

The previous prime is 2021021207. The next prime is 2021021237. The reversal of 2021021222 is 2221201202.

It is an interprime number because it is at equal distance from previous prime (2021021207) and next prime (2021021237).

It is a junction number, because it is equal to n+sod(n) for n = 2021021197 and 2021021206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2417072 + ... + 2417907.

It is an arithmetic number, because the mean of its divisors is an integer number (217574100).

Almost surely, 2^2021021222 is an apocalyptic number.

2021021222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2021021222 is a deficient number, since it is larger than the sum of its proper divisors (1460164378).

2021021222 is a wasteful number, since it uses less digits than its factorization.

2021021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4835011.

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

The square root of 2021021222 is about 44955.7696185929. The cubic root of 2021021222 is about 1264.3198543444.

Adding to 2021021222 its reverse (2221201202), we get a palindrome (4242222424).

The spelling of 2021021222 in words is "two billion, twenty-one million, twenty-one thousand, two hundred twenty-two".