21141210422 has 4 divisors (see below), whose sum is σ = 31711815636. Its totient is φ = 10570605210.

The previous prime is 21141210407. The next prime is 21141210437. The reversal of 21141210422 is 22401214112.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21141210407) and next prime (21141210437).

It is a junction number, because it is equal to n+sod(n) for n = 21141210394 and 21141210403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5285302604 + ... + 5285302607.

It is an arithmetic number, because the mean of its divisors is an integer number (7927953909).

Almost surely, 2^21141210422 is an apocalyptic number.

21141210422 is a deficient number, since it is larger than the sum of its proper divisors (10570605214).

21141210422 is a wasteful number, since it uses less digits than its factorization.

21141210422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10570605213.

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

Adding to 21141210422 its reverse (22401214112), we get a palindrome (43542424534).

The spelling of 21141210422 in words is "twenty-one billion, one hundred forty-one million, two hundred ten thousand, four hundred twenty-two".