2222401421 has 2 divisors, whose sum is σ = 2222401422. Its totient is φ = 2222401420.

The previous prime is 2222401409. The next prime is 2222401469. The reversal of 2222401421 is 1241042222.

2222401421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1972603396 + 249798025 = 44414^2 + 15805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2222401421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2222401393 and 2222401402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2222601421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111200710 + 1111200711.

It is an arithmetic number, because the mean of its divisors is an integer number (1111200711).

Almost surely, 2^2222401421 is an apocalyptic number.

It is an amenable number.

2222401421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222401421 is an equidigital number, since it uses as much as digits as its factorization.

2222401421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 2222401421 is about 47142.3527308513. The cubic root of 2222401421 is about 1304.9909564216.

Adding to 2222401421 its reverse (1241042222), we get a palindrome (3463443643).

The spelling of 2222401421 in words is "two billion, two hundred twenty-two million, four hundred one thousand, four hundred twenty-one".