21204114134 has 16 divisors (see below), whose sum is σ = 36353857536. Its totient is φ = 9086490600.

The previous prime is 21204114131. The next prime is 21204114149. The reversal of 21204114134 is 43141140212.

It is a super-2 number, since 2×21204114134² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21204114131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59729 + ... + 214419.

It is an arithmetic number, because the mean of its divisors is an integer number (2272116096).

Almost surely, 2^21204114134 is an apocalyptic number.

21204114134 is a deficient number, since it is larger than the sum of its proper divisors (15149743402).

21204114134 is a wasteful number, since it uses less digits than its factorization.

21204114134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164491.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21204114134 its reverse (43141140212), we get a palindrome (64345254346).

The spelling of 21204114134 in words is "twenty-one billion, two hundred four million, one hundred fourteen thousand, one hundred thirty-four".