1111020121103 has 4 divisors (see below), whose sum is σ = 1111522165848. Its totient is φ = 1110518076360.

The previous prime is 1111020121063. The next prime is 1111020121121. The reversal of 1111020121103 is 3011210201111.

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 1111020121103 - 2¹⁰ = 1111020120079 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 (1111020121703) 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, 251019053 + ... + 251023478.

It is an arithmetic number, because the mean of its divisors is an integer number (277880541462).

Almost surely, 2^{1111020121103} is an apocalyptic number.

1111020121103 is a deficient number, since it is larger than the sum of its proper divisors (502044745).

1111020121103 is an equidigital number, since it uses as much as digits as its factorization.

1111020121103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502044744.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 1111020121103 its reverse (3011210201111), we get a palindrome (4122230322214).

The spelling of 1111020121103 in words is "one trillion, one hundred eleven billion, twenty million, one hundred twenty-one thousand, one hundred three".