2221240311 has 6 divisors (see below), whose sum is σ = 3208458240. Its totient is φ = 1480826868.

The previous prime is 2221240309. The next prime is 2221240339. The reversal of 2221240311 is 1130421222.

It is a happy number.

It is not a de Polignac number, because 2221240311 - 2¹ = 2221240309 is a prime.

It is a super-2 number, since 2×2221240311² = 9867817038422753442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221240811) 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 5 ways as a sum of consecutive naturals, for example, 123402231 + ... + 123402248.

It is an arithmetic number, because the mean of its divisors is an integer number (534743040).

Almost surely, 2^2221240311 is an apocalyptic number.

2221240311 is a deficient number, since it is larger than the sum of its proper divisors (987217929).

2221240311 is a wasteful number, since it uses less digits than its factorization.

2221240311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246804485 (or 246804482 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2221240311 is about 47130.0361871281. The cubic root of 2221240311 is about 1304.7636494503.

Adding to 2221240311 its reverse (1130421222), we get a palindrome (3351661533).

The spelling of 2221240311 in words is "two billion, two hundred twenty-one million, two hundred forty thousand, three hundred eleven".