21134411034 has 48 divisors (see below), whose sum is σ = 46498821600. Its totient is φ = 6399122400.

The previous prime is 21134411029. The next prime is 21134411083. The reversal of 21134411034 is 43011443112.

It is a junction number, because it is equal to n+sod(n) for n = 21134410995 and 21134411013.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 925992 + ... + 948540.

It is an arithmetic number, because the mean of its divisors is an integer number (968725450).

Almost surely, 2^21134411034 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21134411034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23249410800).

21134411034 is an abundant number, since it is smaller than the sum of its proper divisors (25364410566).

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

21134411034 is a wasteful number, since it uses less digits than its factorization.

21134411034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23867 (or 23856 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 21134411034 its reverse (43011443112), we get a palindrome (64145854146).

The spelling of 21134411034 in words is "twenty-one billion, one hundred thirty-four million, four hundred eleven thousand, thirty-four".