21302013134 has 64 divisors (see below), whose sum is σ = 35964518400. Its totient is φ = 9420818400.

The previous prime is 21302013113. The next prime is 21302013137. The reversal of 21302013134 is 43131020312.

It is a super-2 number, since 2×21302013134² (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 (21302013137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3928277 + ... + 3933695.

It is an arithmetic number, because the mean of its divisors is an integer number (561945600).

Almost surely, 2^21302013134 is an apocalyptic number.

21302013134 is a deficient number, since it is larger than the sum of its proper divisors (14662505266).

21302013134 is a wasteful number, since it uses less digits than its factorization.

21302013134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5589.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21302013134 its reverse (43131020312), we get a palindrome (64433033446).

The spelling of 21302013134 in words is "twenty-one billion, three hundred two million, thirteen thousand, one hundred thirty-four".