221063534 has 16 divisors (see below), whose sum is σ = 348147072. Its totient is φ = 105073848.

The previous prime is 221063533. The next prime is 221063569. The reversal of 221063534 is 435360122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221063533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7244 + ... + 22239.

It is an arithmetic number, because the mean of its divisors is an integer number (21759192).

Almost surely, 2^221063534 is an apocalyptic number.

221063534 is a deficient number, since it is larger than the sum of its proper divisors (127083538).

221063534 is a wasteful number, since it uses less digits than its factorization.

221063534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29671.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 221063534 is about 14868.2054734255. The cubic root of 221063534 is about 604.6522911513.

The spelling of 221063534 in words is "two hundred twenty-one million, sixty-three thousand, five hundred thirty-four".