21202210110220 has 48 divisors (see below), whose sum is σ = 46097302987008. Its totient is φ = 8182953031680.

The previous prime is 21202210110203. The next prime is 21202210110293. The reversal of 21202210110220 is 2201101220212.

It is a happy number.

21202210110220 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 21202210110194 and 21202210110203.

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, 50528617 + ... + 50946496.

It is an arithmetic number, because the mean of its divisors is an integer number (960360478896).

Almost surely, 2^{21202210110220} is an apocalyptic number.

21202210110220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21202210110220 is an abundant number, since it is smaller than the sum of its proper divisors (24895092876788).

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

21202210110220 is a wasteful number, since it uses less digits than its factorization.

21202210110220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101475490 (or 101475488 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21202210110220 its reverse (2201101220212), we get a palindrome (23403311330432).

The spelling of 21202210110220 in words is "twenty-one trillion, two hundred two billion, two hundred ten million, one hundred ten thousand, two hundred twenty".