1201663201 has 8 divisors (see below), whose sum is σ = 1211938560. Its totient is φ = 1191411408.

The previous prime is 1201663193. The next prime is 1201663273. The reversal of 1201663201 is 1023661021.

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 1201663201 - 2³ = 1201663193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201663501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105360 + ... + 116206.

It is an arithmetic number, because the mean of its divisors is an integer number (151492320).

Almost surely, 2^1201663201 is an apocalyptic number.

It is an amenable number.

1201663201 is a deficient number, since it is larger than the sum of its proper divisors (10275359).

1201663201 is a wasteful number, since it uses less digits than its factorization.

1201663201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11783.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1201663201 is about 34665.0140775970. The cubic root of 1201663201 is about 1063.1492910929.

The spelling of 1201663201 in words is "one billion, two hundred one million, six hundred sixty-three thousand, two hundred one".