22101450 has 144 divisors (see below), whose sum is σ = 66495744. Its totient is φ = 4838400.

The previous prime is 22101449. The next prime is 22101463. The reversal of 22101450 is 5410122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 227802 + ... + 227898.

It is an arithmetic number, because the mean of its divisors is an integer number (461776).

Almost surely, 2^22101450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22101450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33247872).

22101450 is an abundant number, since it is smaller than the sum of its proper divisors (44394294).

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

22101450 is a wasteful number, since it uses less digits than its factorization.

22101450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 22101450 is about 4701.2179273035. The cubic root of 22101450 is about 280.6339801162.

Adding to 22101450 its reverse (5410122), we get a palindrome (27511572).

The spelling of 22101450 in words is "twenty-two million, one hundred one thousand, four hundred fifty".