2242240422421 has 4 divisors (see below), whose sum is σ = 2242247286412. Its totient is φ = 2242233558432.

The previous prime is 2242240422413. The next prime is 2242240422451. The reversal of 2242240422421 is 1242240422422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 811955979396 + 1430284443025 = 901086^2 + 1195945^2 .

It is a cyclic number.

It is not a de Polignac number, because 2242240422421 - 2³ = 2242240422413 is a prime.

It is a super-4 number, since 4×2242240422421⁴ (a number of 51 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2242240422451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2916150 + ... + 3603943.

It is an arithmetic number, because the mean of its divisors is an integer number (560561821603).

Almost surely, 2^{2242240422421} is an apocalyptic number.

It is an amenable number.

2242240422421 is a deficient number, since it is larger than the sum of its proper divisors (6863991).

2242240422421 is an equidigital number, since it uses as much as digits as its factorization.

2242240422421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6863990.

The product of its (nonzero) digits is 32768, while the sum is 31.

Adding to 2242240422421 its reverse (1242240422422), we get a palindrome (3484480844843).

Subtracting from 2242240422421 its reverse (1242240422422), we obtain a palindrome (999999999999).

The spelling of 2242240422421 in words is "two trillion, two hundred forty-two billion, two hundred forty million, four hundred twenty-two thousand, four hundred twenty-one".