111261530020 has 24 divisors (see below), whose sum is σ = 233668661184. Its totient is φ = 44500907616.

The previous prime is 111261529999. The next prime is 111261530027. The reversal of 111261530020 is 20035162111.

It is a happy number.

It is a super-2 number, since 2×111261530020² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111261529973 and 111261530000.

It is not an unprimeable number, because it can be changed into a prime (111261530027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21507 + ... + 472213.

It is an arithmetic number, because the mean of its divisors is an integer number (9736194216).

Almost surely, 2^111261530020 is an apocalyptic number.

111261530020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111261530020 is an abundant number, since it is smaller than the sum of its proper divisors (122407131164).

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

111261530020 is a wasteful number, since it uses less digits than its factorization.

111261530020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463059 (or 463057 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 111261530020 its reverse (20035162111), we get a palindrome (131296692131).

The spelling of 111261530020 in words is "one hundred eleven billion, two hundred sixty-one million, five hundred thirty thousand, twenty".