21514451420241 has 20 divisors (see below), whose sum is σ = 34611092789812. Its totient is φ = 13239662411808.

The previous prime is 21514451420221. The next prime is 21514451420243. The reversal of 21514451420241 is 14202415441512.

It is a happy number.

21514451420241 is a `hidden beast` number, since 2 + 1 + 5 + 1 + 445 + 1 + 4 + 202 + 4 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10458853020225 + 11055598400016 = 3234015^2 + 3324996^2 .

It is not a de Polignac number, because 21514451420241 - 2²⁶ = 21514384311377 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21514451420196 and 21514451420205.

It is not an unprimeable number, because it can be changed into a prime (21514451420243) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10215787846 + ... + 10215789951.

Almost surely, 2^{21514451420241} is an apocalyptic number.

It is an amenable number.

21514451420241 is a deficient number, since it is larger than the sum of its proper divisors (13096641369571).

21514451420241 is a wasteful number, since it uses less digits than its factorization.

21514451420241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20431577822 (or 20431577813 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

Adding to 21514451420241 its reverse (14202415441512), we get a palindrome (35716866861753).

The spelling of 21514451420241 in words is "twenty-one trillion, five hundred fourteen billion, four hundred fifty-one million, four hundred twenty thousand, two hundred forty-one".