21041143020207 has 16 divisors (see below), whose sum is σ = 31172209281280. Its totient is φ = 14027363183736.

The previous prime is 21041143020137. The next prime is 21041143020211. The reversal of 21041143020207 is 70202034114012.

21041143020207 is a `hidden beast` number, since 2 + 1 + 0 + 4 + 1 + 1 + 430 + 20 + 207 = 666.

It is not a de Polignac number, because 21041143020207 - 2¹⁴ = 21041143003823 is a prime.

It is a super-2 number, since 2×21041143020207² (a number of 27 digits) contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21041143020217) 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, 4465038 + ... + 7875204.

It is an arithmetic number, because the mean of its divisors is an integer number (1948263080080).

Almost surely, 2^{21041143020207} is an apocalyptic number.

21041143020207 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

21041143020207 is a deficient number, since it is larger than the sum of its proper divisors (10131066261073).

21041143020207 is a wasteful number, since it uses less digits than its factorization.

21041143020207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3638699 (or 3638693 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

Adding to 21041143020207 its reverse (70202034114012), we get a palindrome (91243177134219).

The spelling of 21041143020207 in words is "twenty-one trillion, forty-one billion, one hundred forty-three million, twenty thousand, two hundred seven".