1203201111100 has 36 divisors (see below), whose sum is σ = 2611060490808. Its totient is φ = 481259416000.

The previous prime is 1203201111097. The next prime is 1203201111103. The reversal of 1203201111100 is 11111023021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1203201111097) and next prime (1203201111103).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203201111103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2147235 + ... + 2648965.

It is an arithmetic number, because the mean of its divisors is an integer number (72529458078).

Almost surely, 2^{1203201111100} is an apocalyptic number.

1203201111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1203201111100 is an abundant number, since it is smaller than the sum of its proper divisors (1407859379708).

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

1203201111100 is a wasteful number, since it uses less digits than its factorization.

1203201111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525726 (or 525719 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1203201111100 its reverse (11111023021), we get a palindrome (1214312134121).

The spelling of 1203201111100 in words is "one trillion, two hundred three billion, two hundred one million, one hundred eleven thousand, one hundred".