1101138203 has 8 divisors (see below), whose sum is σ = 1201555776. Its totient is φ = 1000773000.

The previous prime is 1101138173. The next prime is 1101138209. The reversal of 1101138203 is 3028311011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101138203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101138209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40400 + ... + 61922.

It is an arithmetic number, because the mean of its divisors is an integer number (150194472).

Almost surely, 2^1101138203 is an apocalyptic number.

1101138203 is a deficient number, since it is larger than the sum of its proper divisors (100417573).

1101138203 is a wasteful number, since it uses less digits than its factorization.

1101138203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26185.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1101138203 is about 33183.4025229481. The cubic root of 1101138203 is about 1032.6360364585.

Adding to 1101138203 its reverse (3028311011), we get a palindrome (4129449214).

The spelling of 1101138203 in words is "one billion, one hundred one million, one hundred thirty-eight thousand, two hundred three".