2221311220242 has 8 divisors (see below), whose sum is σ = 4442622440496. Its totient is φ = 740437073412.

The previous prime is 2221311220229. The next prime is 2221311220309. The reversal of 2221311220242 is 2420221131222.

It is a sphenic number, since it is the product of 3 distinct primes.

2221311220242 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 185109268348 + ... + 185109268359.

It is an arithmetic number, because the mean of its divisors is an integer number (555327805062).

Almost surely, 2^{2221311220242} is an apocalyptic number.

2221311220242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2221311220242 is a wasteful number, since it uses less digits than its factorization.

2221311220242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370218536712.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 2221311220242 its reverse (2420221131222), we get a palindrome (4641532351464).

The spelling of 2221311220242 in words is "two trillion, two hundred twenty-one billion, three hundred eleven million, two hundred twenty thousand, two hundred forty-two".