221423421340329 has 32 divisors (see below), whose sum is σ = 320662788762624. Its totient is φ = 135099135420480.

The previous prime is 221423421340217. The next prime is 221423421340369. The reversal of 221423421340329 is 923043124324122.

221423421340329 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221423421340329 - 2²⁹ = 221422884469417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221423421340369) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48991087 + ... + 53319540.

It is an arithmetic number, because the mean of its divisors is an integer number (10020712148832).

Almost surely, 2^{221423421340329} is an apocalyptic number.

It is an amenable number.

221423421340329 is a deficient number, since it is larger than the sum of its proper divisors (99239367422295).

221423421340329 is a wasteful number, since it uses less digits than its factorization.

221423421340329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102311117.

The product of its (nonzero) digits is 497664, while the sum is 42.

The spelling of 221423421340329 in words is "two hundred twenty-one trillion, four hundred twenty-three billion, four hundred twenty-one million, three hundred forty thousand, three hundred twenty-nine".