1201132131121 has 8 divisors (see below), whose sum is σ = 1338131287080. Its totient is φ = 1070505028992.

The previous prime is 1201132131109. The next prime is 1201132131137. The reversal of 1201132131121 is 1211312311021.

It can be written as a sum of positive squares in 4 ways, for example, as 122192892721 + 1078939238400 = 349561^2 + 1038720^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1201132131121 - 2¹¹ = 1201132129073 is a prime.

It is a super-2 number, since 2×1201132131121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201132131161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1593013060 + ... + 1593013813.

It is an arithmetic number, because the mean of its divisors is an integer number (167266410885).

Almost surely, 2^{1201132131121} is an apocalyptic number.

It is an amenable number.

1201132131121 is a deficient number, since it is larger than the sum of its proper divisors (136999155959).

1201132131121 is a wasteful number, since it uses less digits than its factorization.

1201132131121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3186026915.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1201132131121 its reverse (1211312311021), we get a palindrome (2412444442142).

The spelling of 1201132131121 in words is "one trillion, two hundred one billion, one hundred thirty-two million, one hundred thirty-one thousand, one hundred twenty-one".