22251430521242 has 8 divisors (see below), whose sum is σ = 35944618534356. Its totient is φ = 10269891009792.

The previous prime is 22251430521233. The next prime is 22251430521247. The reversal of 22251430521242 is 24212503415222.

It can be written as a sum of positive squares in 2 ways, for example, as 22050922697281 + 200507823961 = 4695841^2 + 447781^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22251430521247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427912125383 + ... + 427912125434.

Almost surely, 2^{22251430521242} is an apocalyptic number.

22251430521242 is a deficient number, since it is larger than the sum of its proper divisors (13693188013114).

22251430521242 is a wasteful number, since it uses less digits than its factorization.

22251430521242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855824250832.

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 22251430521242 its reverse (24212503415222), we get a palindrome (46463933936464).

The spelling of 22251430521242 in words is "twenty-two trillion, two hundred fifty-one billion, four hundred thirty million, five hundred twenty-one thousand, two hundred forty-two".