11420121103 has 4 divisors (see below), whose sum is σ = 11421866160. Its totient is φ = 11418376048.

The previous prime is 11420121101. The next prime is 11420121109. The reversal of 11420121103 is 30112102411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11420121103 - 2¹ = 11420121101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11420121101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 862675 + ... + 875812.

It is an arithmetic number, because the mean of its divisors is an integer number (2855466540).

Almost surely, 2^11420121103 is an apocalyptic number.

11420121103 is a deficient number, since it is larger than the sum of its proper divisors (1745057).

11420121103 is an equidigital number, since it uses as much as digits as its factorization.

11420121103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745056.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11420121103 its reverse (30112102411), we get a palindrome (41532223514).

The spelling of 11420121103 in words is "eleven billion, four hundred twenty million, one hundred twenty-one thousand, one hundred three".