21240040040410 has 32 divisors (see below), whose sum is σ = 38348236814400. Its totient is φ = 8470209276672.

The previous prime is 21240040040407. The next prime is 21240040040423. The reversal of 21240040040410 is 1404004004212.

It is a super-2 number, since 2×21240040040410² (a number of 27 digits) contains 22 as substring.

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, 21903457 + ... + 22852603.

It is an arithmetic number, because the mean of its divisors is an integer number (1198382400450).

Almost surely, 2^{21240040040410} is an apocalyptic number.

21240040040410 is a deficient number, since it is larger than the sum of its proper divisors (17108196773990).

21240040040410 is a wasteful number, since it uses less digits than its factorization.

21240040040410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955950.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 21240040040410 its reverse (1404004004212), we get a palindrome (22644044044622).

The spelling of 21240040040410 in words is "twenty-one trillion, two hundred forty billion, forty million, forty thousand, four hundred ten".