15103122443220 has 192 divisors, whose sum is σ = 48984406732800. Its totient is φ = 3405575162880.

The previous prime is 15103122443209. The next prime is 15103122443257. The reversal of 15103122443220 is 2234422130151.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15949635 + ... + 16870005.

It is an arithmetic number, because the mean of its divisors is an integer number (255127118400).

Almost surely, 2^{15103122443220} is an apocalyptic number.

15103122443220 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 15103122443220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24492203366400).

15103122443220 is an abundant number, since it is smaller than the sum of its proper divisors (33881284289580).

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

15103122443220 is a wasteful number, since it uses less digits than its factorization.

15103122443220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920918 (or 920916 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 15103122443220 its reverse (2234422130151), we get a palindrome (17337544573371).

The spelling of 15103122443220 in words is "fifteen trillion, one hundred three billion, one hundred twenty-two million, four hundred forty-three thousand, two hundred twenty".