11121342121103 has 32 divisors (see below), whose sum is σ = 12555151994880. Its totient is φ = 9794191052800.

The previous prime is 11121342121091. The next prime is 11121342121139. The reversal of 11121342121103 is 30112124312111.

It is not a de Polignac number, because 11121342121103 - 2¹⁶ = 11121342055567 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121342121193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37322303 + ... + 37619103.

It is an arithmetic number, because the mean of its divisors is an integer number (392348499840).

Almost surely, 2^{11121342121103} is an apocalyptic number.

11121342121103 is a deficient number, since it is larger than the sum of its proper divisors (1433809873777).

11121342121103 is a wasteful number, since it uses less digits than its factorization.

11121342121103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298927.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 11121342121103 its reverse (30112124312111), we get a palindrome (41233466433214).

The spelling of 11121342121103 in words is "eleven trillion, one hundred twenty-one billion, three hundred forty-two million, one hundred twenty-one thousand, one hundred three".