21044310422 has 8 divisors (see below), whose sum is σ = 31682947872. Its totient is φ = 10483327800.

The previous prime is 21044310389. The next prime is 21044310431. The reversal of 21044310422 is 22401344012.

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

It is a super-2 number, since 2×21044310422² (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, 19413029 + ... + 19414112.

It is an arithmetic number, because the mean of its divisors is an integer number (3960368484).

Almost surely, 2^21044310422 is an apocalyptic number.

21044310422 is a deficient number, since it is larger than the sum of its proper divisors (10638637450).

21044310422 is a wasteful number, since it uses less digits than its factorization.

21044310422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38827414.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 21044310422 its reverse (22401344012), we get a palindrome (43445654434).

The spelling of 21044310422 in words is "twenty-one billion, forty-four million, three hundred ten thousand, four hundred twenty-two".