1201100001 has 8 divisors (see below), whose sum is σ = 1601630784. Its totient is φ = 800651280.

The previous prime is 1201099981. The next prime is 1201100023. The reversal of 1201100001 is 1000011021.

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

It is not a de Polignac number, because 1201100001 - 2⁵ = 1201099969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201100041) 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, 35455 + ... + 60491.

It is an arithmetic number, because the mean of its divisors is an integer number (200203848).

Almost surely, 2^1201100001 is an apocalyptic number.

It is an amenable number.

1201100001 is a deficient number, since it is larger than the sum of its proper divisors (400530783).

1201100001 is a wasteful number, since it uses less digits than its factorization.

1201100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41031.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 1201100001 is about 34656.8896613646. The cubic root of 1201100001 is about 1062.9831715433.

Adding to 1201100001 its reverse (1000011021), we get a palindrome (2201111022).

The spelling of 1201100001 in words is "one billion, two hundred one million, one hundred thousand, one".