21113442422 has 16 divisors (see below), whose sum is σ = 32022961152. Its totient is φ = 10439749800.

The previous prime is 21113442401. The next prime is 21113442443. The reversal of 21113442422 is 22424431112.

It is an interprime number because it is at equal distance from previous prime (21113442401) and next prime (21113442443).

It is a junction number, because it is equal to n+sod(n) for n = 21113442391 and 21113442400.

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, 89408 + ... + 224099.

It is an arithmetic number, because the mean of its divisors is an integer number (2001435072).

Almost surely, 2^21113442422 is an apocalyptic number.

21113442422 is a deficient number, since it is larger than the sum of its proper divisors (10909518730).

21113442422 is a wasteful number, since it uses less digits than its factorization.

21113442422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313883.

The product of its digits is 3072, while the sum is 26.

Adding to 21113442422 its reverse (22424431112), we get a palindrome (43537873534).

The spelling of 21113442422 in words is "twenty-one billion, one hundred thirteen million, four hundred forty-two thousand, four hundred twenty-two".