21041343134 has 12 divisors (see below), whose sum is σ = 36714996864. Its totient is φ = 9017718444.

The previous prime is 21041343107. The next prime is 21041343143. The reversal of 21041343134 is 43134314012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 107353694 + ... + 107353889.

It is an arithmetic number, because the mean of its divisors is an integer number (3059583072).

Almost surely, 2^21041343134 is an apocalyptic number.

21041343134 is a deficient number, since it is larger than the sum of its proper divisors (15673653730).

21041343134 is a wasteful number, since it uses less digits than its factorization.

21041343134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214707599 (or 214707592 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 21041343134 its reverse (43134314012), we get a palindrome (64175657146).

The spelling of 21041343134 in words is "twenty-one billion, forty-one million, three hundred forty-three thousand, one hundred thirty-four".