103320221520 has 80 divisors (see below), whose sum is σ = 321210691200. Its totient is φ = 27473091072.

The previous prime is 103320221509. The next prime is 103320221611. The reversal of 103320221520 is 25122023301.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×103320221520² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 533004 + ... + 700523.

It is an arithmetic number, because the mean of its divisors is an integer number (4015133640).

Almost surely, 2^103320221520 is an apocalyptic number.

103320221520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103320221520 is an abundant number, since it is smaller than the sum of its proper divisors (217890469680).

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

103320221520 is a wasteful number, since it uses less digits than its factorization.

103320221520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233892 (or 1233886 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 103320221520 its reverse (25122023301), we get a palindrome (128442244821).

The spelling of 103320221520 in words is "one hundred three billion, three hundred twenty million, two hundred twenty-one thousand, five hundred twenty".