11020203311131 has 16 divisors (see below), whose sum is σ = 13147298754048. Its totient is φ = 9031627598400.

The previous prime is 11020203311123. The next prime is 11020203311137. The reversal of 11020203311131 is 13111330202011.

It is not a de Polignac number, because 11020203311131 - 2³ = 11020203311123 is a prime.

It is a super-2 number, since 2×11020203311131² (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 = 11020203311099 and 11020203311108.

It is not an unprimeable number, because it can be changed into a prime (11020203311137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13114530 + ... + 13929511.

It is an arithmetic number, because the mean of its divisors is an integer number (821706172128).

Almost surely, 2^{11020203311131} is an apocalyptic number.

11020203311131 is a deficient number, since it is larger than the sum of its proper divisors (2127095442917).

11020203311131 is a wasteful number, since it uses less digits than its factorization.

11020203311131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27046602.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 11020203311131 its reverse (13111330202011), we get a palindrome (24131533513142).

The spelling of 11020203311131 in words is "eleven trillion, twenty billion, two hundred three million, three hundred eleven thousand, one hundred thirty-one".