111012021030 has 64 divisors (see below), whose sum is σ = 278108328960. Its totient is φ = 28306371456.

The previous prime is 111012021019. The next prime is 111012021097. The reversal of 111012021030 is 30120210111.

It is a junction number, because it is equal to n+sod(n) for n = 111012020997 and 111012021015.

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 31 ways as a sum of consecutive naturals, for example, 2098384 + ... + 2150636.

It is an arithmetic number, because the mean of its divisors is an integer number (4345442640).

Almost surely, 2^111012021030 is an apocalyptic number.

111012021030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111012021030 is an abundant number, since it is smaller than the sum of its proper divisors (167096307930).

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

111012021030 is a wasteful number, since it uses less digits than its factorization.

111012021030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55365.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 111012021030 its reverse (30120210111), we get a palindrome (141132231141).

The spelling of 111012021030 in words is "one hundred eleven billion, twelve million, twenty-one thousand, thirty".