21515000114241 has 20 divisors (see below), whose sum is σ = 32434551097300. Its totient is φ = 14211743188896.

The previous prime is 21515000114207. The next prime is 21515000114263. The reversal of 21515000114241 is 14241100051512.

21515000114241 is a `hidden beast` number, since 2 + 1 + 5 + 1 + 500 + 0 + 114 + 2 + 41 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6383055713841 + 15131944400400 = 2526471^2 + 3889980^2 .

It is not a de Polignac number, because 21515000114241 - 2⁶ = 21515000114177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21515000114291) 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, 1218419086 + ... + 1218436743.

It is an arithmetic number, because the mean of its divisors is an integer number (1621727554865).

Almost surely, 2^{21515000114241} is an apocalyptic number.

It is an amenable number.

21515000114241 is a deficient number, since it is larger than the sum of its proper divisors (10919550983059).

21515000114241 is a wasteful number, since it uses less digits than its factorization.

21515000114241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436855950 (or 2436855941 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

Adding to 21515000114241 its reverse (14241100051512), we get a palindrome (35756100165753).

The spelling of 21515000114241 in words is "twenty-one trillion, five hundred fifteen billion, one hundred fourteen thousand, two hundred forty-one".