22002011220 has 192 divisors, whose sum is σ = 72255246336. Its totient is φ = 4897428480.

The previous prime is 22002011183. The next prime is 22002011231. The reversal of 22002011220 is 2211020022.

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 = 22002011196 and 22002011205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15204537 + ... + 15205983.

It is an arithmetic number, because the mean of its divisors is an integer number (376329408).

Almost surely, 2^22002011220 is an apocalyptic number.

22002011220 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 22002011220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36127623168).

22002011220 is an abundant number, since it is smaller than the sum of its proper divisors (50253235116).

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

22002011220 is a wasteful number, since it uses less digits than its factorization.

22002011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390 (or 2388 counting only the distinct ones).

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

Adding to 22002011220 its reverse (2211020022), we get a palindrome (24213031242).

The spelling of 22002011220 in words is "twenty-two billion, two million, eleven thousand, two hundred twenty".