21421322414 has 8 divisors (see below), whose sum is σ = 32260000248. Its totient is φ = 10667989000.

The previous prime is 21421322411. The next prime is 21421322423. The reversal of 21421322414 is 41422312412.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21421322411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21335477 + ... + 21336480.

It is an arithmetic number, because the mean of its divisors is an integer number (4032500031).

Almost surely, 2^21421322414 is an apocalyptic number.

21421322414 is a deficient number, since it is larger than the sum of its proper divisors (10838677834).

21421322414 is a wasteful number, since it uses less digits than its factorization.

21421322414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42672210.

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

Adding to 21421322414 its reverse (41422312412), we get a palindrome (62843634826).

The spelling of 21421322414 in words is "twenty-one billion, four hundred twenty-one million, three hundred twenty-two thousand, four hundred fourteen".