2201222100 has 216 divisors, whose sum is σ = 8082795168. Its totient is φ = 457363200.

The previous prime is 2201222077. The next prime is 2201222113. The reversal of 2201222100 is 12221022.

It is a super-3 number, since 3×2201222100³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 154894 + ... + 168506.

It is an arithmetic number, because the mean of its divisors is an integer number (37420348).

Almost surely, 2^2201222100 is an apocalyptic number.

2201222100 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 2201222100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4041397584).

2201222100 is an abundant number, since it is smaller than the sum of its proper divisors (5881573068).

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

2201222100 is a wasteful number, since it uses less digits than its factorization.

2201222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13655 (or 13641 counting only the distinct ones).

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

The square root of 2201222100 is about 46917.1834192975. The cubic root of 2201222100 is about 1300.8322284551.

Adding to 2201222100 its reverse (12221022), we get a palindrome (2213443122).

It can be divided in two parts, 220122 and 2100, that added together give a palindrome (222222).

The spelling of 2201222100 in words is "two billion, two hundred one million, two hundred twenty-two thousand, one hundred".