22140651 has 16 divisors (see below), whose sum is σ = 33175296. Its totient is φ = 13032096.

The previous prime is 22140649. The next prime is 22140661. The reversal of 22140651 is 15604122.

It is not a de Polignac number, because 22140651 - 2¹ = 22140649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22140631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11445 + ... + 13238.

It is an arithmetic number, because the mean of its divisors is an integer number (2073456).

Almost surely, 2^22140651 is an apocalyptic number.

22140651 is a deficient number, since it is larger than the sum of its proper divisors (11034645).

22140651 is a wasteful number, since it uses less digits than its factorization.

22140651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24722.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 22140651 is about 4705.3853189723. The cubic root of 22140651 is about 280.7998008335.

Adding to 22140651 its reverse (15604122), we get a palindrome (37744773).

It can be divided in two parts, 22140 and 651, that added together give a triangular number (22791 = T₂₁₃).

The spelling of 22140651 in words is "twenty-two million, one hundred forty thousand, six hundred fifty-one".