22000155320 has 256 divisors, whose sum is σ = 59425591680. Its totient is φ = 7225344000.

The previous prime is 22000155187. The next prime is 22000155337. The reversal of 22000155320 is 2355100022.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22000155292 and 22000155301.

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, 65282192 + ... + 65282528.

Almost surely, 2^22000155320 is an apocalyptic number.

22000155320 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 22000155320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29712795840).

22000155320 is an abundant number, since it is smaller than the sum of its proper divisors (37425436360).

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

22000155320 is a wasteful number, since it uses less digits than its factorization.

22000155320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

Adding to 22000155320 its reverse (2355100022), we get a palindrome (24355255342).

The spelling of 22000155320 in words is "twenty-two billion, one hundred fifty-five thousand, three hundred twenty".