10543345426221 has 16 divisors (see below), whose sum is σ = 14169679233024. Its totient is φ = 6972963614064.

The previous prime is 10543345426219. The next prime is 10543345426301. The reversal of 10543345426221 is 12262454334501.

It is not a de Polignac number, because 10543345426221 - 2¹ = 10543345426219 is a prime.

It is a super-2 number, since 2×10543345426221² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10543345426121) 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, 3384096 + ... + 5704278.

It is an arithmetic number, because the mean of its divisors is an integer number (885604952064).

Almost surely, 2^{10543345426221} is an apocalyptic number.

It is an amenable number.

10543345426221 is a deficient number, since it is larger than the sum of its proper divisors (3626333806803).

10543345426221 is a wasteful number, since it uses less digits than its factorization.

10543345426221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332240.

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 10543345426221 in words is "ten trillion, five hundred forty-three billion, three hundred forty-five million, four hundred twenty-six thousand, two hundred twenty-one".