11111120202131 has 4 divisors (see below), whose sum is σ = 11111895970152. Its totient is φ = 11110344434112.

The previous prime is 11111120202121. The next prime is 11111120202139. The reversal of 11111120202131 is 13120202111111.

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 11111120202131 - 2⁶ = 11111120202067 is a prime.

It is a super-2 number, since 2×11111120202131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111120202139) 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, 387862526 + ... + 387891171.

It is an arithmetic number, because the mean of its divisors is an integer number (2777973992538).

Almost surely, 2^{11111120202131} is an apocalyptic number.

11111120202131 is a deficient number, since it is larger than the sum of its proper divisors (775768021).

11111120202131 is an equidigital number, since it uses as much as digits as its factorization.

11111120202131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775768020.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 11111120202131 its reverse (13120202111111), we get a palindrome (24231322313242).

The spelling of 11111120202131 in words is "eleven trillion, one hundred eleven billion, one hundred twenty million, two hundred two thousand, one hundred thirty-one".