21134320424043 has 32 divisors (see below), whose sum is σ = 29948413440000. Its totient is φ = 13219312845312.

The previous prime is 21134320423999. The next prime is 21134320424057. The reversal of 21134320424043 is 34042402343112.

It is not a de Polignac number, because 21134320424043 - 2²⁶ = 21134253315179 is a prime.

It is a super-2 number, since 2×21134320424043² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21134320423995 and 21134320424013.

It is not an unprimeable number, because it can be changed into a prime (21134320434043) 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, 12428598 + ... + 14026356.

It is an arithmetic number, because the mean of its divisors is an integer number (935887920000).

Almost surely, 2^{21134320424043} is an apocalyptic number.

21134320424043 is a deficient number, since it is larger than the sum of its proper divisors (8814093015957).

21134320424043 is a wasteful number, since it uses less digits than its factorization.

21134320424043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600019.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 21134320424043 its reverse (34042402343112), we get a palindrome (55176722767155).

The spelling of 21134320424043 in words is "twenty-one trillion, one hundred thirty-four billion, three hundred twenty million, four hundred twenty-four thousand, forty-three".