1211131132131 has 16 divisors (see below), whose sum is σ = 1616736215808. Its totient is φ = 806473932000.

The previous prime is 1211131132129. The next prime is 1211131132187. The reversal of 1211131132131 is 1312311311121.

It is not a de Polignac number, because 1211131132131 - 2¹ = 1211131132129 is a prime.

It is a super-2 number, since 2×1211131132131² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211131132098 and 1211131132107.

It is not an unprimeable number, because it can be changed into a prime (1211131132331) 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, 9327706 + ... + 9456656.

It is an arithmetic number, because the mean of its divisors is an integer number (101046013488).

Almost surely, 2^{1211131132131} is an apocalyptic number.

1211131132131 is a deficient number, since it is larger than the sum of its proper divisors (405605083677).

1211131132131 is a wasteful number, since it uses less digits than its factorization.

1211131132131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132602.

The product of its digits is 108, while the sum is 21.

Adding to 1211131132131 its reverse (1312311311121), we get a palindrome (2523442443252).

The spelling of 1211131132131 in words is "one trillion, two hundred eleven billion, one hundred thirty-one million, one hundred thirty-two thousand, one hundred thirty-one".