21411144134 has 16 divisors (see below), whose sum is σ = 32435304720. Its totient is φ = 10599893280.

The previous prime is 21411144119. The next prime is 21411144163. The reversal of 21411144134 is 43144111412.

It is a happy number.

It is a Curzon number.

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, 46244 + ... + 212039.

It is an arithmetic number, because the mean of its divisors is an integer number (2027206545).

Almost surely, 2^21411144134 is an apocalyptic number.

21411144134 is a deficient number, since it is larger than the sum of its proper divisors (11024160586).

21411144134 is a wasteful number, since it uses less digits than its factorization.

21411144134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258695.

The product of its digits is 1536, while the sum is 26.

Adding to 21411144134 its reverse (43144111412), we get a palindrome (64555255546).

The spelling of 21411144134 in words is "twenty-one billion, four hundred eleven million, one hundred forty-four thousand, one hundred thirty-four".