21014123422 has 16 divisors (see below), whose sum is σ = 31950917712. Its totient is φ = 10364699520.

The previous prime is 21014123413. The next prime is 21014123467. The reversal of 21014123422 is 22432141012.

It is a junction number, because it is equal to n+sod(n) for n = 21014123393 and 21014123402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172653 + ... + 268024.

It is an arithmetic number, because the mean of its divisors is an integer number (1996932357).

Almost surely, 2^21014123422 is an apocalyptic number.

21014123422 is a deficient number, since it is larger than the sum of its proper divisors (10936794290).

21014123422 is a wasteful number, since it uses less digits than its factorization.

21014123422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441003.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21014123422 its reverse (22432141012), we get a palindrome (43446264434).

The spelling of 21014123422 in words is "twenty-one billion, fourteen million, one hundred twenty-three thousand, four hundred twenty-two".