221457732324073 has 16 divisors (see below), whose sum is σ = 259145286168960. Its totient is φ = 185333006428416.

The previous prime is 221457732324007. The next prime is 221457732324109. The reversal of 221457732324073 is 370423237754122.

It is not a de Polignac number, because 221457732324073 - 2¹³ = 221457732315881 is a prime.

It is a super-2 number, since 2×221457732324073² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221457732324073.

It is not an unprimeable number, because it can be changed into a prime (221457732324173) 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, 2089289158 + ... + 2089395151.

It is an arithmetic number, because the mean of its divisors is an integer number (16196580385560).

Almost surely, 2^{221457732324073} is an apocalyptic number.

It is an amenable number.

221457732324073 is a deficient number, since it is larger than the sum of its proper divisors (37687553844887).

221457732324073 is a wasteful number, since it uses less digits than its factorization.

221457732324073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4178684496.

The product of its (nonzero) digits is 11854080, while the sum is 52.

The spelling of 221457732324073 in words is "two hundred twenty-one trillion, four hundred fifty-seven billion, seven hundred thirty-two million, three hundred twenty-four thousand, seventy-three".