21310444414 has 8 divisors (see below), whose sum is σ = 36532190448. Its totient is φ = 9133047600.

The previous prime is 21310444387. The next prime is 21310444459. The reversal of 21310444414 is 41444401312.

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

It is a super-2 number, since 2×21310444414² (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, 761087287 + ... + 761087314.

It is an arithmetic number, because the mean of its divisors is an integer number (4566523806).

Almost surely, 2^21310444414 is an apocalyptic number.

21310444414 is a deficient number, since it is larger than the sum of its proper divisors (15221746034).

21310444414 is a wasteful number, since it uses less digits than its factorization.

21310444414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522174610.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 21310444414 its reverse (41444401312), we get a palindrome (62754845726).

The spelling of 21310444414 in words is "twenty-one billion, three hundred ten million, four hundred forty-four thousand, four hundred fourteen".