21421012341 has 8 divisors (see below), whose sum is σ = 28823380960. Its totient is φ = 14149659312.

The previous prime is 21421012289. The next prime is 21421012343. The reversal of 21421012341 is 14321012412.

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

It is not a de Polignac number, because 21421012341 - 2²⁹ = 20884141429 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 (21421012343) 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, 32753515 + ... + 32754168.

It is an arithmetic number, because the mean of its divisors is an integer number (3602922620).

Almost surely, 2^21421012341 is an apocalyptic number.

It is an amenable number.

21421012341 is a deficient number, since it is larger than the sum of its proper divisors (7402368619).

21421012341 is a wasteful number, since it uses less digits than its factorization.

21421012341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65507795.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21421012341 its reverse (14321012412), we get a palindrome (35742024753).

The spelling of 21421012341 in words is "twenty-one billion, four hundred twenty-one million, twelve thousand, three hundred forty-one".