22121003444143 has 16 divisors (see below), whose sum is σ = 23169529656000. Its totient is φ = 21079712206080.

The previous prime is 22121003444093. The next prime is 22121003444147. The reversal of 22121003444143 is 34144430012122.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22121003444143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121003444147) 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, 196993633 + ... + 197105893.

It is an arithmetic number, because the mean of its divisors is an integer number (1448095603500).

Almost surely, 2^{22121003444143} is an apocalyptic number.

22121003444143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22121003444143 is a deficient number, since it is larger than the sum of its proper divisors (1048526211857).

22121003444143 is a wasteful number, since it uses less digits than its factorization.

22121003444143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144402.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 22121003444143 its reverse (34144430012122), we get a palindrome (56265433456265).

The spelling of 22121003444143 in words is "twenty-two trillion, one hundred twenty-one billion, three million, four hundred forty-four thousand, one hundred forty-three".