222320342421 has 24 divisors (see below), whose sum is σ = 327416649560. Its totient is φ = 145339785216.

The previous prime is 222320342401. The next prime is 222320342437. The reversal of 222320342421 is 124243023222.

222320342421 is a `hidden beast` number, since 2 + 2 + 232 + 0 + 3 + 4 + 2 + 421 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 118095322500 + 104225019921 = 343650^2 + 322839^2 .

It is not a de Polignac number, because 222320342421 - 2¹⁴ = 222320326037 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 (222320342401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1073020 + ... + 1263333.

Almost surely, 2^222320342421 is an apocalyptic number.

It is an amenable number.

222320342421 is a deficient number, since it is larger than the sum of its proper divisors (105096307139).

222320342421 is a wasteful number, since it uses less digits than its factorization.

222320342421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2336565 (or 2336562 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 222320342421 its reverse (124243023222), we get a palindrome (346563365643).

The spelling of 222320342421 in words is "two hundred twenty-two billion, three hundred twenty million, three hundred forty-two thousand, four hundred twenty-one".