11111313020 has 12 divisors (see below), whose sum is σ = 23333757384. Its totient is φ = 4444525200.

The previous prime is 11111313019. The next prime is 11111313061. The reversal of 11111313020 is 2031311111.

It is a happy number.

11111313020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11111313020² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11111312986 and 11111313004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277782806 + ... + 277782845.

It is an arithmetic number, because the mean of its divisors is an integer number (1944479782).

Almost surely, 2^11111313020 is an apocalyptic number.

11111313020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111313020 is an abundant number, since it is smaller than the sum of its proper divisors (12222444364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11111313020 is a wasteful number, since it uses less digits than its factorization.

11111313020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555565660 (or 555565658 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 11111313020 its reverse (2031311111), we get a palindrome (13142624131).

It can be divided in two parts, 1111 and 1313020, that added together give a palindrome (1314131).

The spelling of 11111313020 in words is "eleven billion, one hundred eleven million, three hundred thirteen thousand, twenty".