111210000020 has 24 divisors (see below), whose sum is σ = 266904000384. Its totient is φ = 38129142816.

The previous prime is 111210000017. The next prime is 111210000047. The reversal of 111210000020 is 20000012111.

It is a junction number, because it is equal to n+sod(n) for n = 111209999962 and 111210000007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397178432 + ... + 397178711.

It is an arithmetic number, because the mean of its divisors is an integer number (11121000016).

Almost surely, 2^111210000020 is an apocalyptic number.

111210000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111210000020 is an abundant number, since it is smaller than the sum of its proper divisors (155694000364).

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

111210000020 is a wasteful number, since it uses less digits than its factorization.

111210000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794357159 (or 794357157 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 111210000020 its reverse (20000012111), we get a palindrome (131210012131).

The spelling of 111210000020 in words is "one hundred eleven billion, two hundred ten million, twenty", and thus it is an aban number.