221342420430 has 48 divisors (see below), whose sum is σ = 576672112224. Its totient is φ = 58903433280.

The previous prime is 221342420419. The next prime is 221342420437. The reversal of 221342420430 is 34024243122.

221342420430 is a `hidden beast` number, since 2 + 2 + 1 + 3 + 424 + 204 + 30 = 666.

221342420430 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×221342420430³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221342420394 and 221342420403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221342420437) 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, 2481181 + ... + 2568840.

It is an arithmetic number, because the mean of its divisors is an integer number (12014002338).

Almost surely, 2^221342420430 is an apocalyptic number.

221342420430 is an abundant number, since it is smaller than the sum of its proper divisors (355329691794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221342420430 is a wasteful number, since it uses less digits than its factorization.

221342420430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050521 (or 5050518 counting only the distinct ones).

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

Adding to 221342420430 its reverse (34024243122), we get a palindrome (255366663552).

The spelling of 221342420430 in words is "two hundred twenty-one billion, three hundred forty-two million, four hundred twenty thousand, four hundred thirty".