1222420313 has 8 divisors (see below), whose sum is σ = 1227408000. Its totient is φ = 1217441808.

The previous prime is 1222420301. The next prime is 1222420333. The reversal of 1222420313 is 3130242221.

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 1222420313 - 2⁸ = 1222420057 is a prime.

It is a super-2 number, since 2×1222420313² = 2988622843270035938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222420333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390368 + ... + 393486.

It is an arithmetic number, because the mean of its divisors is an integer number (153426000).

Almost surely, 2^1222420313 is an apocalyptic number.

It is an amenable number.

1222420313 is a deficient number, since it is larger than the sum of its proper divisors (4987687).

1222420313 is a wasteful number, since it uses less digits than its factorization.

1222420313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4591.

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

The square root of 1222420313 is about 34963.1279064102. The cubic root of 1222420313 is about 1069.2358689665.

Adding to 1222420313 its reverse (3130242221), we get a palindrome (4352662534).

The spelling of 1222420313 in words is "one billion, two hundred twenty-two million, four hundred twenty thousand, three hundred thirteen".