2212255100 has 90 divisors (see below), whose sum is σ = 5284114920. Its totient is φ = 803924000.

The previous prime is 2212255061. The next prime is 2212255117. The reversal of 2212255100 is 15522122.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1463345 + ... + 1464855.

It is an arithmetic number, because the mean of its divisors is an integer number (58712388).

Almost surely, 2^2212255100 is an apocalyptic number.

2212255100 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 2212255100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2642057460).

2212255100 is an abundant number, since it is smaller than the sum of its proper divisors (3071859820).

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

2212255100 is a wasteful number, since it uses less digits than its factorization.

2212255100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569 (or 1529 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 2212255100 is about 47034.6159758959. The cubic root of 2212255100 is about 1303.0019580108.

Adding to 2212255100 its reverse (15522122), we get a palindrome (2227777222).

The spelling of 2212255100 in words is "two billion, two hundred twelve million, two hundred fifty-five thousand, one hundred".