221460198493 has 16 divisors (see below), whose sum is σ = 226252008000. Its totient is φ = 216730039680.

The previous prime is 221460198419. The next prime is 221460198511. The reversal of 221460198493 is 394891064122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 221460198493 - 2²¹ = 221458101341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221460198403) 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, 3723358 + ... + 3782368.

It is an arithmetic number, because the mean of its divisors is an integer number (14140750500).

Almost surely, 2^221460198493 is an apocalyptic number.

It is an amenable number.

221460198493 is a deficient number, since it is larger than the sum of its proper divisors (4791809507).

221460198493 is a wasteful number, since it uses less digits than its factorization.

221460198493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59532.

The product of its (nonzero) digits is 746496, while the sum is 49.

The spelling of 221460198493 in words is "two hundred twenty-one billion, four hundred sixty million, one hundred ninety-eight thousand, four hundred ninety-three".