21430214241 has 8 divisors (see below), whose sum is σ = 28748917920. Its totient is φ = 14199160032.

The previous prime is 21430214237. The next prime is 21430214269. The reversal of 21430214241 is 14241203412.

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

It is not a de Polignac number, because 21430214241 - 2² = 21430214237 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21430214231) 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, 21911796 + ... + 21912773.

It is an arithmetic number, because the mean of its divisors is an integer number (3593614740).

Almost surely, 2^21430214241 is an apocalyptic number.

It is an amenable number.

21430214241 is a deficient number, since it is larger than the sum of its proper divisors (7318703679).

21430214241 is a wasteful number, since it uses less digits than its factorization.

21430214241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43824735.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21430214241 its reverse (14241203412), we get a palindrome (35671417653).

The spelling of 21430214241 in words is "twenty-one billion, four hundred thirty million, two hundred fourteen thousand, two hundred forty-one".