21660230031041 has 32 divisors (see below), whose sum is σ = 26295028531200. Its totient is φ = 17450794831680.

The previous prime is 21660230031017. The next prime is 21660230031047. The reversal of 21660230031041 is 14013003206612.

It is not a de Polignac number, because 21660230031041 - 2¹⁸ = 21660229768897 is a prime.

It is a super-2 number, since 2×21660230031041² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21660230030995 and 21660230031013.

It is not an unprimeable number, because it can be changed into a prime (21660230031047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7545425 + ... + 10012686.

It is an arithmetic number, because the mean of its divisors is an integer number (821719641600).

Almost surely, 2^{21660230031041} is an apocalyptic number.

It is an amenable number.

21660230031041 is a deficient number, since it is larger than the sum of its proper divisors (4634798500159).

21660230031041 is a wasteful number, since it uses less digits than its factorization.

21660230031041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17558309.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 21660230031041 its reverse (14013003206612), we get a palindrome (35673233237653).

The spelling of 21660230031041 in words is "twenty-one trillion, six hundred sixty billion, two hundred thirty million, thirty-one thousand, forty-one".