2223140121421 has 4 divisors (see below), whose sum is σ = 2223173162844. Its totient is φ = 2223107080000.

The previous prime is 2223140121329. The next prime is 2223140121511. The reversal of 2223140121421 is 1241210413222.

2223140121421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1556353556521 + 666786564900 = 1247539^2 + 816570^2 .

It is a cyclic number.

It is not a de Polignac number, because 2223140121421 - 2⁹ = 2223140120909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223140121121) 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, 16419580 + ... + 16554421.

It is an arithmetic number, because the mean of its divisors is an integer number (555793290711).

Almost surely, 2^{2223140121421} is an apocalyptic number.

It is an amenable number.

2223140121421 is a deficient number, since it is larger than the sum of its proper divisors (33041423).

2223140121421 is an equidigital number, since it uses as much as digits as its factorization.

2223140121421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33041422.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 2223140121421 its reverse (1241210413222), we get a palindrome (3464350534643).

The spelling of 2223140121421 in words is "two trillion, two hundred twenty-three billion, one hundred forty million, one hundred twenty-one thousand, four hundred twenty-one".