103112123220 has 72 divisors (see below), whose sum is σ = 312873200640. Its totient is φ = 27487796160.

The previous prime is 103112123201. The next prime is 103112123243. The reversal of 103112123220 is 22321211301.

103112123220 is a `hidden beast` number, since 10 + 311 + 2 + 123 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 103112123193 and 103112123202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 484621 + ... + 664139.

It is an arithmetic number, because the mean of its divisors is an integer number (4345461120).

Almost surely, 2^103112123220 is an apocalyptic number.

103112123220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103112123220 is an abundant number, since it is smaller than the sum of its proper divisors (209761077420).

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

103112123220 is a wasteful number, since it uses less digits than its factorization.

103112123220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182725 (or 182720 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 103112123220 its reverse (22321211301), we get a palindrome (125433334521).

The spelling of 103112123220 in words is "one hundred three billion, one hundred twelve million, one hundred twenty-three thousand, two hundred twenty".