2201217400 has 96 divisors (see below), whose sum is σ = 5202189360. Its totient is φ = 866109440.

The previous prime is 2201217383. The next prime is 2201217407. The reversal of 2201217400 is 47121022.

It is a happy number.

2201217400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201217407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3909519 + ... + 3910081.

Almost surely, 2^2201217400 is an apocalyptic number.

2201217400 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 2201217400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2601094680).

2201217400 is an abundant number, since it is smaller than the sum of its proper divisors (3000971960).

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

2201217400 is a wasteful number, since it uses less digits than its factorization.

2201217400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865 (or 856 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 2201217400 is about 46917.1333310125. The cubic root of 2201217400 is about 1300.8313026185.

Adding to 2201217400 its reverse (47121022), we get a palindrome (2248338422).

The spelling of 2201217400 in words is "two billion, two hundred one million, two hundred seventeen thousand, four hundred".