121003231231103 has 16 divisors (see below), whose sum is σ = 134516797556736. Its totient is φ = 108090577789920.

The previous prime is 121003231231073. The next prime is 121003231231109. The reversal of 121003231231103 is 301132132300121.

It is a cyclic number.

It is not a de Polignac number, because 121003231231103 - 2²⁴ = 121003214453887 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 (121003231231109) 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, 24737150 + ... + 29222132.

It is an arithmetic number, because the mean of its divisors is an integer number (8407299847296).

Almost surely, 2^{121003231231103} is an apocalyptic number.

121003231231103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121003231231103 is a deficient number, since it is larger than the sum of its proper divisors (13513566325633).

121003231231103 is a wasteful number, since it uses less digits than its factorization.

121003231231103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4551974.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 121003231231103 its reverse (301132132300121), we get a palindrome (422135363531224).

The spelling of 121003231231103 in words is "one hundred twenty-one trillion, three billion, two hundred thirty-one million, two hundred thirty-one thousand, one hundred three".