22000100 has 36 divisors (see below), whose sum is σ = 50257200. Its totient is φ = 8336160.

The previous prime is 22000087. The next prime is 22000103. The reversal of 22000100 is 100022.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is not an unprimeable number, because it can be changed into a prime (22000103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3890 + ... + 7689.

Almost surely, 2^22000100 is an apocalyptic number.

22000100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22000100 is an abundant number, since it is smaller than the sum of its proper divisors (28257100).

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

22000100 is a wasteful number, since it uses less digits than its factorization.

22000100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11612 (or 11605 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 5.

The square root of 22000100 is about 4690.4264198471. The cubic root of 22000100 is about 280.2043576163.

Adding to 22000100 its reverse (100022), we get a palindrome (22100122).

The spelling of 22000100 in words is "twenty-two million, one hundred", and thus it is an aban number.