2222340021 has 24 divisors (see below), whose sum is σ = 3506543040. Its totient is φ = 1345075200.

The previous prime is 2222340019. The next prime is 2222340047. The reversal of 2222340021 is 1200432222.

2222340021 is a `hidden beast` number, since 22 + 223 + 400 + 21 = 666.

It is not a de Polignac number, because 2222340021 - 2¹ = 2222340019 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2222339976 and 2222340003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222340221) 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 in 23 ways as a sum of consecutive naturals, for example, 61536 + ... + 90726.

It is an arithmetic number, because the mean of its divisors is an integer number (146105960).

Almost surely, 2^2222340021 is an apocalyptic number.

It is an amenable number.

2222340021 is a deficient number, since it is larger than the sum of its proper divisors (1284203019).

2222340021 is a wasteful number, since it uses less digits than its factorization.

2222340021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29977 (or 29974 counting only the distinct ones).

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

The square root of 2222340021 is about 47141.7015072642. The cubic root of 2222340021 is about 1304.9789383134.

Adding to 2222340021 its reverse (1200432222), we get a palindrome (3422772243).

It can be divided in two parts, 2222 and 340021, that added together give a palindrome (342243).

The spelling of 2222340021 in words is "two billion, two hundred twenty-two million, three hundred forty thousand, twenty-one".