22211220020220 has 864 divisors, whose sum is σ = 85262129971200. Its totient is φ = 4581267102720.

The previous prime is 22211220020201. The next prime is 22211220020237. The reversal of 22211220020220 is 2202002211222.

22211220020220 is a `hidden beast` number, since 2 + 221 + 1 + 2 + 200 + 20 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22211220020193 and 22211220020202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 14174357877 + ... + 14174359443.

It is an arithmetic number, because the mean of its divisors is an integer number (98683020800).

Almost surely, 2^{22211220020220} is an apocalyptic number.

22211220020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22211220020220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42631064985600).

22211220020220 is an abundant number, since it is smaller than the sum of its proper divisors (63050909950980).

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

22211220020220 is a wasteful number, since it uses less digits than its factorization.

22211220020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239 (or 2223 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22211220020220 its reverse (2202002211222), we get a palindrome (24413222231442).

The spelling of 22211220020220 in words is "twenty-two trillion, two hundred eleven billion, two hundred twenty million, twenty thousand, two hundred twenty".