21113013422 has 16 divisors (see below), whose sum is σ = 33638230800. Its totient is φ = 9904188288.

The previous prime is 21113013413. The next prime is 21113013547. The reversal of 21113013422 is 22431031112.

It is a junction number, because it is equal to n+sod(n) for n = 21113013394 and 21113013403.

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, 968672 + ... + 990227.

It is an arithmetic number, because the mean of its divisors is an integer number (2102389425).

Almost surely, 2^21113013422 is an apocalyptic number.

21113013422 is a deficient number, since it is larger than the sum of its proper divisors (12525217378).

21113013422 is a wasteful number, since it uses less digits than its factorization.

21113013422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1959235.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21113013422 its reverse (22431031112), we get a palindrome (43544044534).

The spelling of 21113013422 in words is "twenty-one billion, one hundred thirteen million, thirteen thousand, four hundred twenty-two".