2222664421 has 2 divisors, whose sum is σ = 2222664422. Its totient is φ = 2222664420.

The previous prime is 2222664413. The next prime is 2222664427. The reversal of 2222664421 is 1244662222.

2222664421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2214173025 + 8491396 = 47055^2 + 2914^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222664421 - 2³ = 2222664413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2222664427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111332210 + 1111332211.

It is an arithmetic number, because the mean of its divisors is an integer number (1111332211).

Almost surely, 2^2222664421 is an apocalyptic number.

It is an amenable number.

2222664421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222664421 is an equidigital number, since it uses as much as digits as its factorization.

2222664421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 31.

The square root of 2222664421 is about 47145.1420721160. The cubic root of 2222664421 is about 1305.0424321332.

The spelling of 2222664421 in words is "two billion, two hundred twenty-two million, six hundred sixty-four thousand, four hundred twenty-one".