1203111322100 has 18 divisors (see below), whose sum is σ = 2610751569174. Its totient is φ = 481244528800.

The previous prime is 1203111322093. The next prime is 1203111322109. The reversal of 1203111322100 is 12231113021.

It can be written as a sum of positive squares in 3 ways, for example, as 304911587344 + 898199734756 = 552188^2 + 947734^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203111322109) 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 5 ways as a sum of consecutive naturals, for example, 6015556511 + ... + 6015556710.

It is an arithmetic number, because the mean of its divisors is an integer number (145041753843).

Almost surely, 2^{1203111322100} is an apocalyptic number.

1203111322100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1203111322100 is an abundant number, since it is smaller than the sum of its proper divisors (1407640247074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1203111322100 is a wasteful number, since it uses less digits than its factorization.

1203111322100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12031113235 (or 12031113228 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1203111322100 its reverse (12231113021), we get a palindrome (1215342435121).

The spelling of 1203111322100 in words is "one trillion, two hundred three billion, one hundred eleven million, three hundred twenty-two thousand, one hundred".