1420412221 has 2 divisors, whose sum is σ = 1420412222. Its totient is φ = 1420412220.

The previous prime is 1420412209. The next prime is 1420412233. The reversal of 1420412221 is 1222140241.

It is a balanced prime because it is at equal distance from previous prime (1420412209) and next prime (1420412233).

It can be written as a sum of positive squares in only one way, i.e., 1279135225 + 141276996 = 35765^2 + 11886^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420412221 - 2⁷ = 1420412093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420412251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710206110 + 710206111.

It is an arithmetic number, because the mean of its divisors is an integer number (710206111).

Almost surely, 2^1420412221 is an apocalyptic number.

It is an amenable number.

1420412221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420412221 is an equidigital number, since it uses as much as digits as its factorization.

1420412221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1420412221 is about 37688.3565706970. The cubic root of 1420412221 is about 1124.0996176215.

Adding to 1420412221 its reverse (1222140241), we get a palindrome (2642552462).

The spelling of 1420412221 in words is "one billion, four hundred twenty million, four hundred twelve thousand, two hundred twenty-one".