121234103403 has 16 divisors (see below), whose sum is σ = 185368194816. Its totient is φ = 69040188000.

The previous prime is 121234103383. The next prime is 121234103447. The reversal of 121234103403 is 304301432121.

It is a happy number.

It is not a de Polignac number, because 121234103403 - 2⁵ = 121234103371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121234103203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9845473 + ... + 9857778.

It is an arithmetic number, because the mean of its divisors is an integer number (11585512176).

Almost surely, 2^121234103403 is an apocalyptic number.

121234103403 is a deficient number, since it is larger than the sum of its proper divisors (64134091413).

121234103403 is a wasteful number, since it uses less digits than its factorization.

121234103403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19703554.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 121234103403 its reverse (304301432121), we get a palindrome (425535535524).

The spelling of 121234103403 in words is "one hundred twenty-one billion, two hundred thirty-four million, one hundred three thousand, four hundred three".