22210100 has 72 divisors (see below), whose sum is σ = 53600736. Its totient is φ = 7920000.

The previous prime is 22210091. The next prime is 22210103. The reversal of 22210100 is 101222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22210103) 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, 66935 + ... + 67265.

Almost surely, 2^22210100 is an apocalyptic number.

22210100 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 22210100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26800368).

22210100 is an abundant number, since it is smaller than the sum of its proper divisors (31390636).

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

22210100 is a wasteful number, since it uses less digits than its factorization.

22210100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417 (or 410 counting only the distinct ones).

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

The square root of 22210100 is about 4712.7592766871. The cubic root of 22210100 is about 281.0930910779.

Adding to 22210100 its reverse (101222), we get a palindrome (22311322).

The spelling of 22210100 in words is "twenty-two million, two hundred ten thousand, one hundred".