11331121201031 has 4 divisors (see below), whose sum is σ = 11331872467272. Its totient is φ = 11330369934792.

The previous prime is 11331121201019. The next prime is 11331121201073. The reversal of 11331121201031 is 13010212113311.

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 11331121201031 - 2¹⁸ = 11331120938887 is a prime.

It is a super-2 number, since 2×11331121201031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11331121200994 and 11331121201012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331121204031) 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, 375610496 + ... + 375640661.

It is an arithmetic number, because the mean of its divisors is an integer number (2832968116818).

Almost surely, 2^{11331121201031} is an apocalyptic number.

11331121201031 is a deficient number, since it is larger than the sum of its proper divisors (751266241).

11331121201031 is an equidigital number, since it uses as much as digits as its factorization.

11331121201031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751266240.

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

Adding to 11331121201031 its reverse (13010212113311), we get a palindrome (24341333314342).

The spelling of 11331121201031 in words is "eleven trillion, three hundred thirty-one billion, one hundred twenty-one million, two hundred one thousand, thirty-one".