1131203212101 has 16 divisors (see below), whose sum is σ = 1680164740800. Its totient is φ = 752196816144.

The previous prime is 1131203212099. The next prime is 1131203212171. The reversal of 1131203212101 is 1012123021311.

1131203212101 is a `hidden beast` number, since 1 + 13 + 120 + 321 + 210 + 1 = 666.

It is not a de Polignac number, because 1131203212101 - 2¹ = 1131203212099 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131203212171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53840931 + ... + 53861936.

It is an arithmetic number, because the mean of its divisors is an integer number (105010296300).

Almost surely, 2^{1131203212101} is an apocalyptic number.

It is an amenable number.

1131203212101 is a deficient number, since it is larger than the sum of its proper divisors (548961528699).

1131203212101 is a wasteful number, since it uses less digits than its factorization.

1131203212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107703265 (or 107703259 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1131203212101 its reverse (1012123021311), we get a palindrome (2143326233412).

The spelling of 1131203212101 in words is "one trillion, one hundred thirty-one billion, two hundred three million, two hundred twelve thousand, one hundred one".