1220663001 has 8 divisors (see below), whose sum is σ = 1634536800. Its totient is φ = 810282272.

The previous prime is 1220662997. The next prime is 1220663077. The reversal of 1220663001 is 1003660221.

It is a happy number.

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 1220663001 - 2² = 1220662997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220663201) 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, 872451 + ... + 873848.

It is an arithmetic number, because the mean of its divisors is an integer number (204317100).

Almost surely, 2^1220663001 is an apocalyptic number.

It is an amenable number.

1220663001 is a deficient number, since it is larger than the sum of its proper divisors (413873799).

1220663001 is a wasteful number, since it uses less digits than its factorization.

1220663001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746535.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1220663001 is about 34937.9879357699. The cubic root of 1220663001 is about 1068.7232569212.

The spelling of 1220663001 in words is "one billion, two hundred twenty million, six hundred sixty-three thousand, one".