1000434430221 has 8 divisors (see below), whose sum is σ = 1333919793024. Its totient is φ = 666952677120.

The previous prime is 1000434430141. The next prime is 1000434430223. The reversal of 1000434430221 is 1220344340001.

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

It is not a de Polignac number, because 1000434430221 - 2²⁷ = 1000300212493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000434430191 and 1000434430200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000434430223) 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, 171061 + ... + 1424826.

It is an arithmetic number, because the mean of its divisors is an integer number (166739974128).

Almost surely, 2^{1000434430221} is an apocalyptic number.

It is an amenable number.

1000434430221 is a deficient number, since it is larger than the sum of its proper divisors (333485362803).

1000434430221 is a wasteful number, since it uses less digits than its factorization.

1000434430221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804851.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1000434430221 its reverse (1220344340001), we get a palindrome (2220778770222).

The spelling of 1000434430221 in words is "one trillion, four hundred thirty-four million, four hundred thirty thousand, two hundred twenty-one".