221543762733047 has 12 divisors (see below), whose sum is σ = 229574032939056. Its totient is φ = 213785551425600.

The previous prime is 221543762732911. The next prime is 221543762733053. The reversal of 221543762733047 is 740337267345122.

It is a happy number.

It is not a de Polignac number, because 221543762733047 - 2²⁰ = 221543761684471 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221543762732983 and 221543762733001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221543762733067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71619443 + ... + 74648724.

It is an arithmetic number, because the mean of its divisors is an integer number (19131169411588).

Almost surely, 2^{221543762733047} is an apocalyptic number.

221543762733047 is a deficient number, since it is larger than the sum of its proper divisors (8030270206009).

221543762733047 is a wasteful number, since it uses less digits than its factorization.

221543762733047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146270026 (or 146269997 counting only the distinct ones).

The product of its (nonzero) digits is 35562240, while the sum is 56.

The spelling of 221543762733047 in words is "two hundred twenty-one trillion, five hundred forty-three billion, seven hundred sixty-two million, seven hundred thirty-three thousand, forty-seven".