22101220220 has 24 divisors (see below), whose sum is σ = 46846329264. Its totient is φ = 8757865856.

The previous prime is 22101220181. The next prime is 22101220231. The reversal of 22101220220 is 2202210122.

It is a junction number, because it is equal to n+sod(n) for n = 22101220195 and 22101220204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5161697 + ... + 5165976.

It is an arithmetic number, because the mean of its divisors is an integer number (1951930386).

Almost surely, 2^22101220220 is an apocalyptic number.

22101220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22101220220 is an abundant number, since it is smaller than the sum of its proper divisors (24745109044).

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

22101220220 is a wasteful number, since it uses less digits than its factorization.

22101220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10327789 (or 10327787 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22101220220 its reverse (2202210122), we get a palindrome (24303430342).

The spelling of 22101220220 in words is "twenty-two billion, one hundred one million, two hundred twenty thousand, two hundred twenty".