22010201220 has 72 divisors (see below), whose sum is σ = 71690379264. Its totient is φ = 5030902464.

The previous prime is 22010201207. The next prime is 22010201237. The reversal of 22010201220 is 2210201022.

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 = 22010201196 and 22010201205.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3740292 + ... + 3746171.

It is an arithmetic number, because the mean of its divisors is an integer number (995699712).

Almost surely, 2^22010201220 is an apocalyptic number.

22010201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22010201220 is an abundant number, since it is smaller than the sum of its proper divisors (49680178044).

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

22010201220 is a wasteful number, since it uses less digits than its factorization.

22010201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7486489 (or 7486480 counting only the distinct ones).

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

Adding to 22010201220 its reverse (2210201022), we get a palindrome (24220402242).

The spelling of 22010201220 in words is "twenty-two billion, ten million, two hundred one thousand, two hundred twenty".