22100140 has 24 divisors (see below), whose sum is σ = 46639152. Its totient is φ = 8796480.

The previous prime is 22100131. The next prime is 22100147. The reversal of 22100140 is 4100122.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (22100147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1602 + ... + 6838.

It is an arithmetic number, because the mean of its divisors is an integer number (1943298).

Almost surely, 2^22100140 is an apocalyptic number.

22100140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22100140 is an abundant number, since it is smaller than the sum of its proper divisors (24539012).

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

22100140 is a wasteful number, since it uses less digits than its factorization.

22100140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5457 (or 5455 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 22100140 is about 4701.0785996407. The cubic root of 22100140 is about 280.6284354154.

Adding to 22100140 its reverse (4100122), we get a palindrome (26200262).

The spelling of 22100140 in words is "twenty-two million, one hundred thousand, one hundred forty".