1222420331 has 8 divisors (see below), whose sum is σ = 1336447728. Its totient is φ = 1108876000.

The previous prime is 1222420301. The next prime is 1222420333. The reversal of 1222420331 is 1330242221.

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

It is a cyclic number.

It is not a de Polignac number, because 1222420331 - 2¹⁰ = 1222419307 is a prime.

It is a super-2 number, since 2×1222420331² = 2988622931284299122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1222420333) 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, 115460 + ... + 125601.

It is an arithmetic number, because the mean of its divisors is an integer number (167055966).

Almost surely, 2^1222420331 is an apocalyptic number.

1222420331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222420331 is a deficient number, since it is larger than the sum of its proper divisors (114027397).

1222420331 is a wasteful number, since it uses less digits than its factorization.

1222420331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241533.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1222420331 is about 34963.1281638242. The cubic root of 1222420331 is about 1069.2358742146.

Adding to 1222420331 its reverse (1330242221), we get a palindrome (2552662552).

The spelling of 1222420331 in words is "one billion, two hundred twenty-two million, four hundred twenty thousand, three hundred thirty-one".