103220120311220 has 96 divisors (see below), whose sum is σ = 238820889234816. Its totient is φ = 37161137216000.

The previous prime is 103220120311207. The next prime is 103220120311267. The reversal of 103220120311220 is 22113021022301.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 103220120311192 and 103220120311201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 503024882 + ... + 503230038.

It is an arithmetic number, because the mean of its divisors is an integer number (2487717596196).

Almost surely, 2^{103220120311220} is an apocalyptic number.

103220120311220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103220120311220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119410444617408).

103220120311220 is an abundant number, since it is smaller than the sum of its proper divisors (135600768923596).

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

103220120311220 is a wasteful number, since it uses less digits than its factorization.

103220120311220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227921 (or 227919 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 103220120311220 its reverse (22113021022301), we get a palindrome (125333141333521).

The spelling of 103220120311220 in words is "one hundred three trillion, two hundred twenty billion, one hundred twenty million, three hundred eleven thousand, two hundred twenty".