2210021100 has 432 divisors, whose sum is σ = 8575840000. Its totient is φ = 464693760.

The previous prime is 2210021089. The next prime is 2210021101. The reversal of 2210021100 is 11200122.

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

It is not an unprimeable number, because it can be changed into a prime (2210021101) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4428651 + ... + 4429149.

Almost surely, 2^2210021100 is an apocalyptic number.

2210021100 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 2210021100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4287920000).

2210021100 is an abundant number, since it is smaller than the sum of its proper divisors (6365818900).

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

2210021100 is a wasteful number, since it uses less digits than its factorization.

2210021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 572 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2210021100 is about 47010.8615109317. The cubic root of 2210021100 is about 1302.5632071085.

Adding to 2210021100 its reverse (11200122), we get a palindrome (2221221222).

The spelling of 2210021100 in words is "two billion, two hundred ten million, twenty-one thousand, one hundred".