21012411422 has 8 divisors (see below), whose sum is σ = 31525333056. Its totient is φ = 10503967072.

The previous prime is 21012411379. The next prime is 21012411473. The reversal of 21012411422 is 22411421012.

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

It is a junction number, because it is equal to n+sod(n) for n = 21012411394 and 21012411403.

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, 1107563 + ... + 1126374.

It is an arithmetic number, because the mean of its divisors is an integer number (3940666632).

Almost surely, 2^21012411422 is an apocalyptic number.

21012411422 is a deficient number, since it is larger than the sum of its proper divisors (10512921634).

21012411422 is a wasteful number, since it uses less digits than its factorization.

21012411422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238642.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21012411422 its reverse (22411421012), we get a palindrome (43423832434).

The spelling of 21012411422 in words is "twenty-one billion, twelve million, four hundred eleven thousand, four hundred twenty-two".