1222424421 has 8 divisors (see below), whose sum is σ = 1635463200. Its totient is φ = 812167632.

The previous prime is 1222424419. The next prime is 1222424431. The reversal of 1222424421 is 1244242221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1222424421 - 2¹ = 1222424419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222424391 and 1222424400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222424431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 694471 + ... + 696228.

It is an arithmetic number, because the mean of its divisors is an integer number (204432900).

Almost surely, 2^1222424421 is an apocalyptic number.

It is an amenable number.

1222424421 is a deficient number, since it is larger than the sum of its proper divisors (413038779).

1222424421 is a wasteful number, since it uses less digits than its factorization.

1222424421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390995.

The product of its digits is 2048, while the sum is 24.

The square root of 1222424421 is about 34963.1866539651. The cubic root of 1222424421 is about 1069.2370667040.

Adding to 1222424421 its reverse (1244242221), we get a palindrome (2466666642).

The spelling of 1222424421 in words is "one billion, two hundred twenty-two million, four hundred twenty-four thousand, four hundred twenty-one".