121203302103 has 48 divisors (see below), whose sum is σ = 198439952256. Its totient is φ = 73473285600.

The previous prime is 121203302089. The next prime is 121203302131. The reversal of 121203302103 is 301203302121.

121203302103 is a `hidden beast` number, since 1 + 2 + 120 + 330 + 210 + 3 = 666.

It is not a de Polignac number, because 121203302103 - 2⁶ = 121203302039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121203302903) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74673 + ... + 497978.

It is an arithmetic number, because the mean of its divisors is an integer number (4134165672).

Almost surely, 2^121203302103 is an apocalyptic number.

121203302103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121203302103 is a deficient number, since it is larger than the sum of its proper divisors (77236650153).

121203302103 is an equidigital number, since it uses as much as digits as its factorization.

121203302103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572746 (or 572734 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 121203302103 its sum of digits (18), we get a palindrome (121203302121).

Adding to 121203302103 its reverse (301203302121), we get a palindrome (422406604224).

The spelling of 121203302103 in words is "one hundred twenty-one billion, two hundred three million, three hundred two thousand, one hundred three".