22256243212651 has 16 divisors (see below), whose sum is σ = 26040139231744. Its totient is φ = 18623895300864.

The previous prime is 22256243212631. The next prime is 22256243212663. The reversal of 22256243212651 is 15621234265222.

It is not a de Polignac number, because 22256243212651 - 2⁷ = 22256243212523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22256243212598 and 22256243212607.

It is not an unprimeable number, because it can be changed into a prime (22256243212631) 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, 17722335 + ... + 18936568.

It is an arithmetic number, because the mean of its divisors is an integer number (1627508701984).

Almost surely, 2^{22256243212651} is an apocalyptic number.

22256243212651 is a deficient number, since it is larger than the sum of its proper divisors (3783896019093).

22256243212651 is a wasteful number, since it uses less digits than its factorization.

22256243212651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36660970.

The product of its digits is 691200, while the sum is 43.

Adding to 22256243212651 its reverse (15621234265222), we get a palindrome (37877477477873).

The spelling of 22256243212651 in words is "twenty-two trillion, two hundred fifty-six billion, two hundred forty-three million, two hundred twelve thousand, six hundred fifty-one".