1203311021103 has 12 divisors (see below), whose sum is σ = 1738125588888. Its totient is φ = 802202884560.

The previous prime is 1203311021071. The next prime is 1203311021147. The reversal of 1203311021103 is 3011201133021.

1203311021103 is a `hidden beast` number, since 120 + 331 + 1 + 0 + 211 + 0 + 3 = 666.

It is not a de Polignac number, because 1203311021103 - 2⁵ = 1203311021071 is a prime.

It is a super-2 number, since 2×1203311021103² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203311021173) 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 11 ways as a sum of consecutive naturals, for example, 2516068 + ... + 2955878.

It is an arithmetic number, because the mean of its divisors is an integer number (144843799074).

Almost surely, 2^{1203311021103} is an apocalyptic number.

1203311021103 is a deficient number, since it is larger than the sum of its proper divisors (534814567785).

1203311021103 is a wasteful number, since it uses less digits than its factorization.

1203311021103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743814 (or 743811 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1203311021103 its reverse (3011201133021), we get a palindrome (4214512154124).

The spelling of 1203311021103 in words is "one trillion, two hundred three billion, three hundred eleven million, twenty-one thousand, one hundred three".