121011213103 has 16 divisors (see below), whose sum is σ = 134492219136. Its totient is φ = 107956031040.

The previous prime is 121011213097. The next prime is 121011213107. The reversal of 121011213103 is 301312110121.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-121011213103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011213107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118326 + ... + 505987.

It is an arithmetic number, because the mean of its divisors is an integer number (8405763696).

Almost surely, 2^121011213103 is an apocalyptic number.

121011213103 is a deficient number, since it is larger than the sum of its proper divisors (13481006033).

121011213103 is a wasteful number, since it uses less digits than its factorization.

121011213103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624654.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 121011213103 its reverse (301312110121), we get a palindrome (422323323224).

The spelling of 121011213103 in words is "one hundred twenty-one billion, eleven million, two hundred thirteen thousand, one hundred three".