2219301421 has 2 divisors, whose sum is σ = 2219301422. Its totient is φ = 2219301420.

The previous prime is 2219301407. The next prime is 2219301433. The reversal of 2219301421 is 1241039122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1943575396 + 275726025 = 44086^2 + 16605^2 .

It is a cyclic number.

It is not a de Polignac number, because 2219301421 - 2¹³ = 2219293229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2219301401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109650710 + 1109650711.

It is an arithmetic number, because the mean of its divisors is an integer number (1109650711).

Almost surely, 2^2219301421 is an apocalyptic number.

It is an amenable number.

2219301421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2219301421 is an equidigital number, since it uses as much as digits as its factorization.

2219301421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2219301421 is about 47109.4621174982. The cubic root of 2219301421 is about 1304.3839022116.

The spelling of 2219301421 in words is "two billion, two hundred nineteen million, three hundred one thousand, four hundred twenty-one".