221043123416432 has 20 divisors (see below), whose sum is σ = 428275507362456. Its totient is φ = 110520411839040.

The previous prime is 221043123416293. The next prime is 221043123416459. The reversal of 221043123416432 is 234614321340122.

It is a happy number.

221043123416432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221043123416432² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70279838 + ... + 73357629.

Almost surely, 2^{221043123416432} is an apocalyptic number.

It is an amenable number.

221043123416432 is a deficient number, since it is larger than the sum of its proper divisors (207232383946024).

221043123416432 is a wasteful number, since it uses less digits than its factorization.

221043123416432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143733656 (or 143733650 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

Adding to 221043123416432 its reverse (234614321340122), we get a palindrome (455657444756554).

The spelling of 221043123416432 in words is "two hundred twenty-one trillion, forty-three billion, one hundred twenty-three million, four hundred sixteen thousand, four hundred thirty-two".