21411120134 has 4 divisors (see below), whose sum is σ = 32116680204. Its totient is φ = 10705560066.

The previous prime is 21411120131. The next prime is 21411120167. The reversal of 21411120134 is 43102111412.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21411120131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5352780032 + ... + 5352780035.

It is an arithmetic number, because the mean of its divisors is an integer number (8029170051).

Almost surely, 2^21411120134 is an apocalyptic number.

21411120134 is a deficient number, since it is larger than the sum of its proper divisors (10705560070).

21411120134 is a wasteful number, since it uses less digits than its factorization.

21411120134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10705560069.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21411120134 its reverse (43102111412), we get a palindrome (64513231546).

The spelling of 21411120134 in words is "twenty-one billion, four hundred eleven million, one hundred twenty thousand, one hundred thirty-four".