21532342513011 has 16 divisors (see below), whose sum is σ = 31319893703808. Its totient is φ = 13049853396800.

The previous prime is 21532342512997. The next prime is 21532342513063. The reversal of 21532342513011 is 11031524323512.

It is a happy number.

It is not a de Polignac number, because 21532342513011 - 2⁵ = 21532342512979 is a prime.

It is a super-2 number, since 2×21532342513011² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (21532342513711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8348551 + ... + 10618991.

It is an arithmetic number, because the mean of its divisors is an integer number (1957493356488).

Almost surely, 2^{21532342513011} is an apocalyptic number.

21532342513011 is a deficient number, since it is larger than the sum of its proper divisors (9787551190797).

21532342513011 is a wasteful number, since it uses less digits than its factorization.

21532342513011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557842.

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 21532342513011 its reverse (11031524323512), we get a palindrome (32563866836523).

The spelling of 21532342513011 in words is "twenty-one trillion, five hundred thirty-two billion, three hundred forty-two million, five hundred thirteen thousand, eleven".