1131121011113 has 4 divisors (see below), whose sum is σ = 1170125183940. Its totient is φ = 1092116838288.

The previous prime is 1131121011107. The next prime is 1131121011151. The reversal of 1131121011113 is 3111101211311.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 933952153744 + 197168857369 = 966412^2 + 444037^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131121011113 - 2¹⁸ = 1131120748969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131121011091 and 1131121011100.

It is not an unprimeable number, because it can be changed into a prime (1131121011103) 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, 19502086370 + ... + 19502086427.

It is an arithmetic number, because the mean of its divisors is an integer number (292531295985).

Almost surely, 2^{1131121011113} is an apocalyptic number.

It is an amenable number.

1131121011113 is a deficient number, since it is larger than the sum of its proper divisors (39004172827).

1131121011113 is an equidigital number, since it uses as much as digits as its factorization.

1131121011113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39004172826.

The product of its (nonzero) digits is 18, while the sum is 17.

Adding to 1131121011113 its reverse (3111101211311), we get a palindrome (4242222222424).

The spelling of 1131121011113 in words is "one trillion, one hundred thirty-one billion, one hundred twenty-one million, eleven thousand, one hundred thirteen".