221534524577145 has 128 divisors (see below), whose sum is σ = 405897020282880. Its totient is φ = 102211099361280.

The previous prime is 221534524577141. The next prime is 221534524577153. The reversal of 221534524577145 is 541775425435122.

It is not a de Polignac number, because 221534524577145 - 2² = 221534524577141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221534524577141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 957213201 + ... + 957444609.

It is an arithmetic number, because the mean of its divisors is an integer number (3171070470960).

Almost surely, 2^{221534524577145} is an apocalyptic number.

It is an amenable number.

221534524577145 is a deficient number, since it is larger than the sum of its proper divisors (184362495705735).

221534524577145 is a wasteful number, since it uses less digits than its factorization.

221534524577145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232675.

The product of its digits is 47040000, while the sum is 57.

The spelling of 221534524577145 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, five hundred twenty-four million, five hundred seventy-seven thousand, one hundred forty-five".