1203123201100 has 36 divisors (see below), whose sum is σ = 2611305744208. Its totient is φ = 481151880000.

The previous prime is 1203123201073. The next prime is 1203123201113. The reversal of 1203123201100 is 11023213021.

It is a super-2 number, since 2×1203123201100² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

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, 719931 + ... + 1710130.

Almost surely, 2^{1203123201100} is an apocalyptic number.

1203123201100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1203123201100 is an abundant number, since it is smaller than the sum of its proper divisors (1408182543108).

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

1203123201100 is a wasteful number, since it uses less digits than its factorization.

1203123201100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435026 (or 2435019 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1203123201100 its reverse (11023213021), we get a palindrome (1214146414121).

The spelling of 1203123201100 in words is "one trillion, two hundred three billion, one hundred twenty-three million, two hundred one thousand, one hundred".