234891564371221 has 8 divisors (see below), whose sum is σ = 243035206264800. Its totient is φ = 226750851329520.

The previous prime is 234891564371213. The next prime is 234891564371407. The reversal of 234891564371221 is 122173465198432.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 234891564371221 - 2³ = 234891564371213 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 (234891564371621) 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, 732049791 + ... + 732370588.

It is an arithmetic number, because the mean of its divisors is an integer number (30379400783100).

Almost surely, 2^{234891564371221} is an apocalyptic number.

It is an amenable number.

234891564371221 is a deficient number, since it is larger than the sum of its proper divisors (8143641893579).

234891564371221 is a wasteful number, since it uses less digits than its factorization.

234891564371221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464425939.

The product of its digits is 17418240, while the sum is 58.

The spelling of 234891564371221 in words is "two hundred thirty-four trillion, eight hundred ninety-one billion, five hundred sixty-four million, three hundred seventy-one thousand, two hundred twenty-one".