21411223434 has 24 divisors (see below), whose sum is σ = 48407984352. Its totient is φ = 6826766760.

The previous prime is 21411223403. The next prime is 21411223459. The reversal of 21411223434 is 43432211412.

21411223434 is a `hidden beast` number, since 2 + 1 + 4 + 1 + 1 + 223 + 434 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 21411223398 and 21411223407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25858552 + ... + 25859379.

It is an arithmetic number, because the mean of its divisors is an integer number (2016999348).

Almost surely, 2^21411223434 is an apocalyptic number.

21411223434 is an abundant number, since it is smaller than the sum of its proper divisors (26996760918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21411223434 is a wasteful number, since it uses less digits than its factorization.

21411223434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51717962 (or 51717959 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 21411223434 its reverse (43432211412), we get a palindrome (64843434846).

The spelling of 21411223434 in words is "twenty-one billion, four hundred eleven million, two hundred twenty-three thousand, four hundred thirty-four".