22144123122440 has 64 divisors (see below), whose sum is σ = 55822777248960. Its totient is φ = 7834775742720.

The previous prime is 22144123122431. The next prime is 22144123122463. The reversal of 22144123122440 is 4422132144122.

It is a junction number, because it is equal to n+sod(n) for n = 22144123122397 and 22144123122406.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 680085782 + ... + 680118341.

It is an arithmetic number, because the mean of its divisors is an integer number (872230894515).

Almost surely, 2^{22144123122440} is an apocalyptic number.

22144123122440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22144123122440 is an abundant number, since it is smaller than the sum of its proper divisors (33678654126520).

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

22144123122440 is a wasteful number, since it uses less digits than its factorization.

22144123122440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360204182 (or 1360204178 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 22144123122440 its reverse (4422132144122), we get a palindrome (26566255266562).

The spelling of 22144123122440 in words is "twenty-two trillion, one hundred forty-four billion, one hundred twenty-three million, one hundred twenty-two thousand, four hundred forty".