2212221000 has 256 divisors, whose sum is σ = 7709644800. Its totient is φ = 523488000.

The previous prime is 2212220987. The next prime is 2212221013. The reversal of 2212221000 is 1222122.

It is an interprime number because it is at equal distance from previous prime (2212220987) and next prime (2212221013).

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1418221 + ... + 1419779.

It is an arithmetic number, because the mean of its divisors is an integer number (30115800).

Almost surely, 2^2212221000 is an apocalyptic number.

2212221000 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 2212221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3854822400).

2212221000 is an abundant number, since it is smaller than the sum of its proper divisors (5497423800).

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

2212221000 is a wasteful number, since it uses less digits than its factorization.

2212221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1637 (or 1623 counting only the distinct ones).

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

The square root of 2212221000 is about 47034.2534755257. The cubic root of 2212221000 is about 1302.9952630935.

Adding to 2212221000 its reverse (1222122), we get a palindrome (2213443122).

It can be divided in two parts, 221222 and 1000, that added together give a palindrome (222222).

The spelling of 2212221000 in words is "two billion, two hundred twelve million, two hundred twenty-one thousand".