201211200112100 has 18 divisors (see below), whose sum is σ = 436628304243474. Its totient is φ = 80484480044800.

The previous prime is 201211200112099. The next prime is 201211200112123. The reversal of 201211200112100 is 1211002112102.

It can be written as a sum of positive squares in 3 ways, for example, as 4325177046436 + 196886023065664 = 2079706^2 + 14031608^2 .

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 5 ways as a sum of consecutive naturals, for example, 1006056000461 + ... + 1006056000660.

Almost surely, 2^{201211200112100} is an apocalyptic number.

201211200112100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201211200112100 is an abundant number, since it is smaller than the sum of its proper divisors (235417104131374).

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

201211200112100 is a wasteful number, since it uses less digits than its factorization.

201211200112100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012112001135 (or 2012112001128 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201211200112100 its reverse (1211002112102), we get a palindrome (202422202224202).

The spelling of 201211200112100 in words is "two hundred one trillion, two hundred eleven billion, two hundred million, one hundred twelve thousand, one hundred".