22101020220 has 24 divisors (see below), whose sum is σ = 61882856784. Its totient is φ = 5893605376.

The previous prime is 22101020219. The next prime is 22101020233. The reversal of 22101020220 is 2202010122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 22101020196 and 22101020205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184175109 + ... + 184175228.

It is an arithmetic number, because the mean of its divisors is an integer number (2578452366).

Almost surely, 2^22101020220 is an apocalyptic number.

22101020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22101020220 is an abundant number, since it is smaller than the sum of its proper divisors (39781836564).

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

22101020220 is a wasteful number, since it uses less digits than its factorization.

22101020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368350349 (or 368350347 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22101020220 its reverse (2202010122), we get a palindrome (24303030342).

The spelling of 22101020220 in words is "twenty-two billion, one hundred one million, twenty thousand, two hundred twenty".