1201201000100 has 36 divisors (see below), whose sum is σ = 2608073413764. Its totient is φ = 480209940480.

The previous prime is 1201201000093. The next prime is 1201201000127. The reversal of 1201201000100 is 10001021021.

It can be written as a sum of positive squares in 6 ways, for example, as 4588165696 + 1196612834404 = 67736^2 + 1093898^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3202157 + ... + 3557556.

Almost surely, 2^{1201201000100} is an apocalyptic number.

1201201000100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201201000100 is an abundant number, since it is smaller than the sum of its proper divisors (1406872413664).

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

1201201000100 is a wasteful number, since it uses less digits than its factorization.

1201201000100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6761504 (or 6761497 counting only the distinct ones).

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

Adding to 1201201000100 its reverse (10001021021), we get a palindrome (1211202021121).

The spelling of 1201201000100 in words is "one trillion, two hundred one billion, two hundred one million, one hundred", and thus it is an aban number.