21244040414 has 8 divisors (see below), whose sum is σ = 31871651688. Its totient is φ = 10620156520.

The previous prime is 21244040401. The next prime is 21244040423. The reversal of 21244040414 is 41404044212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21244040414² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917552 + ... + 940419.

It is an arithmetic number, because the mean of its divisors is an integer number (3983956461).

Almost surely, 2^21244040414 is an apocalyptic number.

21244040414 is a deficient number, since it is larger than the sum of its proper divisors (10627611274).

21244040414 is a wasteful number, since it uses less digits than its factorization.

21244040414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863690.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 21244040414 its reverse (41404044212), we get a palindrome (62648084626).

The spelling of 21244040414 in words is "twenty-one billion, two hundred forty-four million, forty thousand, four hundred fourteen".