22021454 has 16 divisors (see below), whose sum is σ = 40655328. Its totient is φ = 8711712.

The previous prime is 22021429. The next prime is 22021457. The reversal of 22021454 is 45412022.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60317 + ... + 60680.

It is an arithmetic number, because the mean of its divisors is an integer number (2540958).

Almost surely, 2^22021454 is an apocalyptic number.

22021454 is a deficient number, since it is larger than the sum of its proper divisors (18633874).

22021454 is a wasteful number, since it uses less digits than its factorization.

22021454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121019.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 22021454 is about 4692.7022066183. The cubic root of 22021454 is about 280.2949867343.

Adding to 22021454 its reverse (45412022), we get a palindrome (67433476).

The spelling of 22021454 in words is "twenty-two million, twenty-one thousand, four hundred fifty-four".