21103301322220 has 48 divisors (see below), whose sum is σ = 48046235932800. Its totient is φ = 7739692943616.

The previous prime is 21103301322209. The next prime is 21103301322251. The reversal of 21103301322220 is 2222310330112.

It is a junction number, because it is equal to n+sod(n) for n = 21103301322191 and 21103301322200.

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, 272332212 + ... + 272409691.

It is an arithmetic number, because the mean of its divisors is an integer number (1000963248600).

Almost surely, 2^{21103301322220} is an apocalyptic number.

21103301322220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21103301322220 is an abundant number, since it is smaller than the sum of its proper divisors (26942934610580).

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

21103301322220 is a wasteful number, since it uses less digits than its factorization.

21103301322220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544742074 (or 544742072 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21103301322220 its reverse (2222310330112), we get a palindrome (23325611652332).

The spelling of 21103301322220 in words is "twenty-one trillion, one hundred three billion, three hundred one million, three hundred twenty-two thousand, two hundred twenty".