1201200010100 has 18 divisors (see below), whose sum is σ = 2606604022134. Its totient is φ = 480480004000.

The previous prime is 1201200010079. The next prime is 1201200010117. The reversal of 1201200010100 is 10100021021.

It can be written as a sum of positive squares in 3 ways, for example, as 567011344 + 1200632998756 = 23812^2 + 1095734^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6005999951 + ... + 6006000150.

It is an arithmetic number, because the mean of its divisors is an integer number (144811334563).

Almost surely, 2^{1201200010100} is an apocalyptic number.

1201200010100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201200010100 is an abundant number, since it is smaller than the sum of its proper divisors (1405404012034).

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

1201200010100 is a wasteful number, since it uses less digits than its factorization.

1201200010100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12012000115 (or 12012000108 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1201200010100 its reverse (10100021021), we get a palindrome (1211300031121).

The spelling of 1201200010100 in words is "one trillion, two hundred one billion, two hundred million, ten thousand, one hundred".