21014420241 has 16 divisors (see below), whose sum is σ = 28148305088. Its totient is φ = 13945176000.

The previous prime is 21014420237. The next prime is 21014420263. The reversal of 21014420241 is 14202441012.

It is not a de Polignac number, because 21014420241 - 2² = 21014420237 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21014420941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 861351 + ... + 885411.

It is an arithmetic number, because the mean of its divisors is an integer number (1759269068).

Almost surely, 2^21014420241 is an apocalyptic number.

It is an amenable number.

21014420241 is a deficient number, since it is larger than the sum of its proper divisors (7133884847).

21014420241 is a wasteful number, since it uses less digits than its factorization.

21014420241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25392.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 21014420241 its reverse (14202441012), we get a palindrome (35216861253).

The spelling of 21014420241 in words is "twenty-one billion, fourteen million, four hundred twenty thousand, two hundred forty-one".