21402241320410 has 32 divisors (see below), whose sum is σ = 39639525850512. Its totient is φ = 8316208076800.

The previous prime is 21402241320401. The next prime is 21402241320431. The reversal of 21402241320410 is 1402314220412.

21402241320410 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 19920502371121 + 1481738949289 = 4463239^2 + 1217267^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21402241320410.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199855319 + ... + 199962378.

Almost surely, 2^{21402241320410} is an apocalyptic number.

21402241320410 is a deficient number, since it is larger than the sum of its proper divisors (18237284530102).

21402241320410 is a wasteful number, since it uses less digits than its factorization.

21402241320410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399817858.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 21402241320410 its reverse (1402314220412), we get a palindrome (22804555540822).

The spelling of 21402241320410 in words is "twenty-one trillion, four hundred two billion, two hundred forty-one million, three hundred twenty thousand, four hundred ten".