1311200212101 has 16 divisors (see below), whose sum is σ = 1981841077440. Its totient is φ = 764424414720.

The previous prime is 1311200212043. The next prime is 1311200212103. The reversal of 1311200212101 is 1012120021131.

It is not a de Polignac number, because 1311200212101 - 2⁶ = 1311200212037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311200212103) 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, 884749740 + ... + 884751221.

It is an arithmetic number, because the mean of its divisors is an integer number (123865067340).

Almost surely, 2^{1311200212101} is an apocalyptic number.

It is an amenable number.

1311200212101 is a deficient number, since it is larger than the sum of its proper divisors (670640865339).

1311200212101 is a wasteful number, since it uses less digits than its factorization.

1311200212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769500996.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1311200212101 its reverse (1012120021131), we get a palindrome (2323320233232).

The spelling of 1311200212101 in words is "one trillion, three hundred eleven billion, two hundred million, two hundred twelve thousand, one hundred one".