21532205057110 has 96 divisors (see below), whose sum is σ = 45655445174976. Its totient is φ = 7287044371200.

The previous prime is 21532205057107. The next prime is 21532205057119. The reversal of 21532205057110 is 1175050223512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21532205057119) 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 47 ways as a sum of consecutive naturals, for example, 9425761 + ... + 11485180.

It is an arithmetic number, because the mean of its divisors is an integer number (475577553906).

Almost surely, 2^{21532205057110} is an apocalyptic number.

21532205057110 is an abundant number, since it is smaller than the sum of its proper divisors (24123240117866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21532205057110 is a wasteful number, since it uses less digits than its factorization.

21532205057110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20911030 (or 20911019 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 34.

The spelling of 21532205057110 in words is "twenty-one trillion, five hundred thirty-two billion, two hundred five million, fifty-seven thousand, one hundred ten".