2150222220 has 192 divisors, whose sum is σ = 7185024000. Its totient is φ = 531901440.

The previous prime is 2150222209. The next prime is 2150222257. The reversal of 2150222220 is 222220512.

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 = 2150222193 and 2150222202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 650131 + ... + 653429.

It is an arithmetic number, because the mean of its divisors is an integer number (37422000).

Almost surely, 2^2150222220 is an apocalyptic number.

2150222220 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 2150222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3592512000).

2150222220 is an abundant number, since it is smaller than the sum of its proper divisors (5034801780).

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

2150222220 is a wasteful number, since it uses less digits than its factorization.

2150222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3405 (or 3397 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 2150222220 is about 46370.4886754496. The cubic root of 2150222220 is about 1290.7073459802.

Adding to 2150222220 its reverse (222220512), we get a palindrome (2372442732).

The spelling of 2150222220 in words is "two billion, one hundred fifty million, two hundred twenty-two thousand, two hundred twenty".