1121311031331 has 16 divisors (see below), whose sum is σ = 1496287231488. Its totient is φ = 746937900000.

The previous prime is 1121311031329. The next prime is 1121311031339. The reversal of 1121311031331 is 1331301131211.

It is not a de Polignac number, because 1121311031331 - 2¹ = 1121311031329 is a prime.

It is a super-2 number, since 2×1121311031331² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1121311031298 and 1121311031307.

It is not an unprimeable number, because it can be changed into a prime (1121311031339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49822581 + ... + 49845081.

It is an arithmetic number, because the mean of its divisors is an integer number (93517951968).

Almost surely, 2^{1121311031331} is an apocalyptic number.

1121311031331 is a deficient number, since it is larger than the sum of its proper divisors (374976200157).

1121311031331 is a wasteful number, since it uses less digits than its factorization.

1121311031331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35162.

The product of its (nonzero) digits is 162, while the sum is 21.

Adding to 1121311031331 its reverse (1331301131211), we get a palindrome (2452612162542).

The spelling of 1121311031331 in words is "one trillion, one hundred twenty-one billion, three hundred eleven million, thirty-one thousand, three hundred thirty-one".