1201121331131 has 4 divisors (see below), whose sum is σ = 1201134332112. Its totient is φ = 1201108330152.

The previous prime is 1201121331103. The next prime is 1201121331161. The reversal of 1201121331131 is 1311331211021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1201121331131 - 2¹⁴ = 1201121314747 is a prime.

It is a super-2 number, since 2×1201121331131² (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 (1201121331101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6360911 + ... + 6547016.

It is an arithmetic number, because the mean of its divisors is an integer number (300283583028).

Almost surely, 2^{1201121331131} is an apocalyptic number.

1201121331131 is a deficient number, since it is larger than the sum of its proper divisors (13000981).

1201121331131 is an equidigital number, since it uses as much as digits as its factorization.

1201121331131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13000980.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1201121331131 its reverse (1311331211021), we get a palindrome (2512452542152).

The spelling of 1201121331131 in words is "one trillion, two hundred one billion, one hundred twenty-one million, three hundred thirty-one thousand, one hundred thirty-one".