1200101103 has 20 divisors (see below), whose sum is σ = 1800668760. Its totient is φ = 796530672.

The previous prime is 1200101099. The next prime is 1200101131. The reversal of 1200101103 is 3011010021.

1200101103 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1200101103 - 2² = 1200101099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200101183) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14248 + ... + 51021.

It is an arithmetic number, because the mean of its divisors is an integer number (90033438).

Almost surely, 2^1200101103 is an apocalyptic number.

1200101103 is a deficient number, since it is larger than the sum of its proper divisors (600567657).

1200101103 is an equidigital number, since it uses as much as digits as its factorization.

1200101103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65508 (or 65499 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1200101103 is about 34642.4754167482. The cubic root of 1200101103 is about 1062.6884122249.

Adding to 1200101103 its reverse (3011010021), we get a palindrome (4211111124).

The spelling of 1200101103 in words is "one billion, two hundred million, one hundred one thousand, one hundred three".