1201212130100 has 36 divisors (see below), whose sum is σ = 2608980996300. Its totient is φ = 480051548160.

The previous prime is 1201212130099. The next prime is 1201212130103. The reversal of 1201212130100 is 10312121021.

It can be written as a sum of positive squares in 6 ways, for example, as 107209095184 + 1094003034916 = 327428^2 + 1045946^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201212130103) 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, 5304845 + ... + 5526644.

Almost surely, 2^{1201212130100} is an apocalyptic number.

1201212130100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201212130100 is an abundant number, since it is smaller than the sum of its proper divisors (1407768866200).

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

1201212130100 is a wasteful number, since it uses less digits than its factorization.

1201212130100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10832612 (or 10832605 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1201212130100 its reverse (10312121021), we get a palindrome (1211524251121).

The spelling of 1201212130100 in words is "one trillion, two hundred one billion, two hundred twelve million, one hundred thirty thousand, one hundred".