1220388467 has 2 divisors, whose sum is σ = 1220388468. Its totient is φ = 1220388466.

The previous prime is 1220388443. The next prime is 1220388517. The reversal of 1220388467 is 7648830221.

It is a weak prime.

It is an emirp because it is prime and its reverse (7648830221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1220388467 - 2¹² = 1220384371 is a prime.

It is a super-2 number, since 2×1220388467² = 2978696020773220178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1220388167) 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 as a sum of consecutive naturals, namely, 610194233 + 610194234.

It is an arithmetic number, because the mean of its divisors is an integer number (610194234).

Almost surely, 2^1220388467 is an apocalyptic number.

1220388467 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220388467 is an equidigital number, since it uses as much as digits as its factorization.

1220388467 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 1220388467 is about 34934.0588394764. The cubic root of 1220388467 is about 1068.6431302826.

The spelling of 1220388467 in words is "one billion, two hundred twenty million, three hundred eighty-eight thousand, four hundred sixty-seven".