21011414321 has 8 divisors (see below), whose sum is σ = 21208851840. Its totient is φ = 20814061968.

The previous prime is 21011414297. The next prime is 21011414339. The reversal of 21011414321 is 12341411012.

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

It is a cyclic number.

It is not a de Polignac number, because 21011414321 - 2³⁰ = 19937672497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21011414293 and 21011414302.

It is not an unprimeable number, because it can be changed into a prime (21011414621) 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, 544550 + ... + 581856.

It is an arithmetic number, because the mean of its divisors is an integer number (2651106480).

Almost surely, 2^21011414321 is an apocalyptic number.

It is an amenable number.

21011414321 is a deficient number, since it is larger than the sum of its proper divisors (197437519).

21011414321 is a wasteful number, since it uses less digits than its factorization.

21011414321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42583.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21011414321 its reverse (12341411012), we get a palindrome (33352825333).

The spelling of 21011414321 in words is "twenty-one billion, eleven million, four hundred fourteen thousand, three hundred twenty-one".