1203202121103 has 24 divisors (see below), whose sum is σ = 1840630499136. Its totient is φ = 754770240000.

The previous prime is 1203202121039. The next prime is 1203202121167. The reversal of 1203202121103 is 3011212023021.

1203202121103 is a `hidden beast` number, since 1 + 20 + 320 + 212 + 110 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (1203202121039) and next prime (1203202121167).

It is not a de Polignac number, because 1203202121103 - 2⁶ = 1203202121039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203202121503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 293223 + ... + 1578728.

It is an arithmetic number, because the mean of its divisors is an integer number (76692937464).

Almost surely, 2^{1203202121103} is an apocalyptic number.

1203202121103 is a deficient number, since it is larger than the sum of its proper divisors (637428378033).

1203202121103 is a wasteful number, since it uses less digits than its factorization.

1203202121103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876175 (or 1876172 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1203202121103 its reverse (3011212023021), we get a palindrome (4214414144124).

The spelling of 1203202121103 in words is "one trillion, two hundred three billion, two hundred two million, one hundred twenty-one thousand, one hundred three".