1422211621 has 2 divisors, whose sum is σ = 1422211622. Its totient is φ = 1422211620.

The previous prime is 1422211499. The next prime is 1422211631. The reversal of 1422211621 is 1261122241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1353504100 + 68707521 = 36790^2 + 8289^2 .

It is a cyclic number.

It is not a de Polignac number, because 1422211621 - 2²¹ = 1420114469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1422211592 and 1422211601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1422211631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711105810 + 711105811.

It is an arithmetic number, because the mean of its divisors is an integer number (711105811).

Almost surely, 2^1422211621 is an apocalyptic number.

It is an amenable number.

1422211621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1422211621 is an equidigital number, since it uses as much as digits as its factorization.

1422211621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384, while the sum is 22.

The square root of 1422211621 is about 37712.2211093433. The cubic root of 1422211621 is about 1124.5740928692.

Adding to 1422211621 its reverse (1261122241), we get a palindrome (2683333862).

The spelling of 1422211621 in words is "one billion, four hundred twenty-two million, two hundred eleven thousand, six hundred twenty-one".