22001220202220 has 96 divisors (see below), whose sum is σ = 56825524183680. Its totient is φ = 6983167242240.

The previous prime is 22001220202193. The next prime is 22001220202301. The reversal of 22001220202220 is 2220202210022.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75627035 + ... + 75917394.

It is an arithmetic number, because the mean of its divisors is an integer number (591932543580).

Almost surely, 2^{22001220202220} is an apocalyptic number.

22001220202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22001220202220 is an abundant number, since it is smaller than the sum of its proper divisors (34824303981460).

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

22001220202220 is a wasteful number, since it uses less digits than its factorization.

22001220202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151544523 (or 151544521 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 22001220202220 its reverse (2220202210022), we get a palindrome (24221422412242).

The spelling of 22001220202220 in words is "twenty-two trillion, one billion, two hundred twenty million, two hundred two thousand, two hundred twenty".