21421411414 has 32 divisors (see below), whose sum is σ = 36463553280. Its totient is φ = 9356552352.

The previous prime is 21421411381. The next prime is 21421411423. The reversal of 21421411414 is 41411412412.

It is a congruent number.

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, 455277 + ... + 500119.

It is an arithmetic number, because the mean of its divisors is an integer number (1139486040).

Almost surely, 2^21421411414 is an apocalyptic number.

21421411414 is a deficient number, since it is larger than the sum of its proper divisors (15042141866).

21421411414 is a wasteful number, since it uses less digits than its factorization.

21421411414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45844.

The product of its digits is 1024, while the sum is 25.

Adding to 21421411414 its reverse (41411412412), we get a palindrome (62832823826).

The spelling of 21421411414 in words is "twenty-one billion, four hundred twenty-one million, four hundred eleven thousand, four hundred fourteen".