2220001200 has 180 divisors, whose sum is σ = 7748858208. Its totient is φ = 588556800.

The previous prime is 2220001187. The next prime is 2220001261. The reversal of 2220001200 is 21000222.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 649897 + ... + 653303.

Almost surely, 2^2220001200 is an apocalyptic number.

2220001200 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 2220001200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3874429104).

2220001200 is an abundant number, since it is smaller than the sum of its proper divisors (5528857008).

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

2220001200 is a wasteful number, since it uses less digits than its factorization.

2220001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3612 (or 3598 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2220001200 is about 47116.8886918481. Note that the first 3 decimals coincide. The cubic root of 2220001200 is about 1304.5209850692.

Adding to 2220001200 its reverse (21000222), we get a palindrome (2241001422).

The spelling of 2220001200 in words is "two billion, two hundred twenty million, one thousand, two hundred".