221321243024434 has 32 divisors (see below), whose sum is σ = 380052320893056. Its totient is φ = 94690884625920.

The previous prime is 221321243024407. The next prime is 221321243024461. The reversal of 221321243024434 is 434420342123122.

It is an interprime number because it is at equal distance from previous prime (221321243024407) and next prime (221321243024461).

It is a super-2 number, since 2×221321243024434² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221321243024393 and 221321243024402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61230114 + ... + 64743874.

It is an arithmetic number, because the mean of its divisors is an integer number (11876635027908).

Almost surely, 2^{221321243024434} is an apocalyptic number.

221321243024434 is a deficient number, since it is larger than the sum of its proper divisors (158731077868622).

221321243024434 is a wasteful number, since it uses less digits than its factorization.

221321243024434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3521410.

The product of its (nonzero) digits is 221184, while the sum is 37.

Adding to 221321243024434 its reverse (434420342123122), we get a palindrome (655741585147556).

The spelling of 221321243024434 in words is "two hundred twenty-one trillion, three hundred twenty-one billion, two hundred forty-three million, twenty-four thousand, four hundred thirty-four".